Finding the Fourth Proportional to 81,488,375.20, 122,232,562.80 and 20,904,101.20
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Solution
The fourth proportional to 81,488,375.20, 122,232,562.80 and 20,904,101.20 is: 31,356,151.80
Step by Step Solution
- Step 1: Write the proportion equation
81,488,375.20 : 122,232,562.80 = 20,904,101.20 : x - Step 2: Convert to fraction form
81,488,375.20/122,232,562.80 = 20,904,101.20/x - Step 3: Cross multiply
81,488,375.20x = 122,232,562.80 × 20,904,101.20 - Step 4: Simplify right side
81,488,375.20x = 2,555,161,862,706,555 - Step 5: Solve for x
x = 2,555,161,862,706,555/81,488,375.20 - Step 6: Final answer
x = 31,356,151.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.