This is exactly how I measured (both while sitting on chair and sitting on floor).

And it comes out to 33-33.5 inches (83 cm average). Just to be triple sure I just did it again a min ago. Same result. My overall height is 171-172 CM.
My leg proportions don't look off to me and nobody has ever commented on that. People have only commented that my arms/shoulders are broad for my body. Laughingly, people said I "look tall" in photographs before because of my posture and wingspan. And if you don't have a huge wingspan you could still give a wicked illusion with a proud and strong posture.
@RisingShorty, I will take some picts in the future of my whole body. Here's a 3 year old photograph showing my upper body tho.
I drew a line approximately wear my belt line is.

@Arche, that ratio is great man. Like I said, even at .48, nobody has ever commented on my legs. You would be perfectly fine with 10 cm imo. What is your wingspan tho?