Finding the Fourth Proportional to 87,715.98, 121,103.40 and 60,849.09
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Solution
The fourth proportional to 87,715.98, 121,103.40 and 60,849.09 is: 84,010.14
Step by Step Solution
- Step 1: Write the proportion equation
87,715.98 : 121,103.40 = 60,849.09 : x - Step 2: Convert to fraction form
87,715.98/121,103.40 = 60,849.09/x - Step 3: Cross multiply
87,715.98x = 121,103.40 × 60,849.09 - Step 4: Simplify right side
87,715.98x = 7,369,031,685.91 - Step 5: Solve for x
x = 7,369,031,685.91/87,715.98 - Step 6: Final answer
x = 84,010.14
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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.