Finding the Fourth Proportional to 87,029,160.35, 120,272,487.39 and 71,323,418.03
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Solution
The fourth proportional to 87,029,160.35, 120,272,487.39 and 71,323,418.03 is: 98,567,478.55
Step by Step Solution
- Step 1: Write the proportion equation
87,029,160.35 : 120,272,487.39 = 71,323,418.03 : x - Step 2: Convert to fraction form
87,029,160.35/120,272,487.39 = 71,323,418.03/x - Step 3: Cross multiply
87,029,160.35x = 120,272,487.39 × 71,323,418.03 - Step 4: Simplify right side
87,029,160.35x = 8,578,244,895,624,874 - Step 5: Solve for x
x = 8,578,244,895,624,874/87,029,160.35 - Step 6: Final answer
x = 98,567,478.55
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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.