According to the hypothesis you tested in this experiment, the ratio of a person's upper limb length to body height is approximately 50%.

Upper Limb Length

The measurement from the top of the shoulder to the tip of the fingers, reflecting the dimensions of the arm and hand.

Body Height

The length of a human body from the bottom of the feet to the top of the head when standing upright.

Ratio

A ratio is a mathematical expression that compares two or more numbers, showing how much larger one quantity is than another.