Finding the Fourth Proportional to 87,819.86, 121,158.99 and 57,621.95
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Solution
The fourth proportional to 87,819.86, 121,158.99 and 57,621.95 is: 79,497.02
Step by Step Solution
- Step 1: Write the proportion equation
87,819.86 : 121,158.99 = 57,621.95 : x - Step 2: Convert to fraction form
87,819.86/121,158.99 = 57,621.95/x - Step 3: Cross multiply
87,819.86x = 121,158.99 × 57,621.95 - Step 4: Simplify right side
87,819.86x = 6,981,417,112.38 - Step 5: Solve for x
x = 6,981,417,112.38/87,819.86 - Step 6: Final answer
x = 79,497.02
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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.