Finding the Fourth Proportional to 87,425.71, 120,691.05 and 57,257.26
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Solution
The fourth proportional to 87,425.71, 120,691.05 and 57,257.26 is: 79,043.55
Step by Step Solution
- Step 1: Write the proportion equation
87,425.71 : 120,691.05 = 57,257.26 : x - Step 2: Convert to fraction form
87,425.71/120,691.05 = 57,257.26/x - Step 3: Cross multiply
87,425.71x = 120,691.05 × 57,257.26 - Step 4: Simplify right side
87,425.71x = 6,910,438,313.08 - Step 5: Solve for x
x = 6,910,438,313.08/87,425.71 - Step 6: Final answer
x = 79,043.55
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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.