Finding the Third Proportional to 31,680 and 49,828
Calculator
Solution
The third proportional to 31,680 and 49,828 is: 78,372.15
Step by Step Solution
- Step 1: Write the proportion equation
31,680 : 49,828 = 49,828 : x - Step 2: Convert to fraction form
31,680/49,828 = 49,828/x - Step 3: Cross multiply
31,680x = 49,828 × 49,828 - Step 4: Simplify right side
31,680x = 2,482,829,584 - Step 5: Solve for x
x = 2,482,829,584/31,680 - Step 6: Final answer
x = 78,372.15
Related Problems
Find third proportional to 15,840 and 24,914
Half scale
Find third proportional to 63,360 and 99,656
Double scale
Find third proportional to 31,682 and 49,831
Similar ratio
Find third proportional to 47,520 and 74,742
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.