Finding the Fourth Proportional to 71,782,388.46, 99,059,192.19 and 39,187,340.46
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Solution
The fourth proportional to 71,782,388.46, 99,059,192.19 and 39,187,340.46 is: 54,078,254.75
Step by Step Solution
- Step 1: Write the proportion equation
71,782,388.46 : 99,059,192.19 = 39,187,340.46 : x - Step 2: Convert to fraction form
71,782,388.46/99,059,192.19 = 39,187,340.46/x - Step 3: Cross multiply
71,782,388.46x = 99,059,192.19 × 39,187,340.46 - Step 4: Simplify right side
71,782,388.46x = 3,881,866,290,042,103 - Step 5: Solve for x
x = 3,881,866,290,042,103/71,782,388.46 - Step 6: Final answer
x = 54,078,254.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.