Finding the Fourth Proportional to 88,686.10, 133,029.15 and 87,519.70
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Solution
The fourth proportional to 88,686.10, 133,029.15 and 87,519.70 is: 131,279.55
Step by Step Solution
- Step 1: Write the proportion equation
88,686.10 : 133,029.15 = 87,519.70 : x - Step 2: Convert to fraction form
88,686.10/133,029.15 = 87,519.70/x - Step 3: Cross multiply
88,686.10x = 133,029.15 × 87,519.70 - Step 4: Simplify right side
88,686.10x = 11,642,671,299.26 - Step 5: Solve for x
x = 11,642,671,299.26/88,686.10 - Step 6: Final answer
x = 131,279.55
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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.