Finding the Fourth Proportional to 86,209,092.30, 129,313,638.45 and 76,855,730.70
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Solution
The fourth proportional to 86,209,092.30, 129,313,638.45 and 76,855,730.70 is: 115,283,596.05
Step by Step Solution
- Step 1: Write the proportion equation
86,209,092.30 : 129,313,638.45 = 76,855,730.70 : x - Step 2: Convert to fraction form
86,209,092.30/129,313,638.45 = 76,855,730.70/x - Step 3: Cross multiply
86,209,092.30x = 129,313,638.45 × 76,855,730.70 - Step 4: Simplify right side
86,209,092.30x = 9,938,494,172,550,366 - Step 5: Solve for x
x = 9,938,494,172,550,366/86,209,092.30 - Step 6: Final answer
x = 115,283,596.05
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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.