Finding the Fourth Proportional to 71,787,728.80, 107,681,593.20 and 26,343,618.40
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Solution
The fourth proportional to 71,787,728.80, 107,681,593.20 and 26,343,618.40 is: 39,515,427.60
Step by Step Solution
- Step 1: Write the proportion equation
71,787,728.80 : 107,681,593.20 = 26,343,618.40 : x - Step 2: Convert to fraction form
71,787,728.80/107,681,593.20 = 26,343,618.40/x - Step 3: Cross multiply
71,787,728.80x = 107,681,593.20 × 26,343,618.40 - Step 4: Simplify right side
71,787,728.80x = 2,836,722,799,964,835 - Step 5: Solve for x
x = 2,836,722,799,964,835/71,787,728.80 - Step 6: Final answer
x = 39,515,427.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.