Finding the Fourth Proportional to 81,287,871.78, 121,904,474.23 and 29,461,625.62
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Solution
The fourth proportional to 81,287,871.78, 121,904,474.23 and 29,461,625.62 is: 44,182,531.82
Step by Step Solution
- Step 1: Write the proportion equation
81,287,871.78 : 121,904,474.23 = 29,461,625.62 : x - Step 2: Convert to fraction form
81,287,871.78/121,904,474.23 = 29,461,625.62/x - Step 3: Cross multiply
81,287,871.78x = 121,904,474.23 × 29,461,625.62 - Step 4: Simplify right side
81,287,871.78x = 3,591,503,981,167,198 - Step 5: Solve for x
x = 3,591,503,981,167,198/81,287,871.78 - Step 6: Final answer
x = 44,182,531.82
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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.