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Finding the Fourth Proportional to 87,686.80, 131,458.20 and 37,805.20

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Solution

The fourth proportional to 87,686.80, 131,458.20 and 37,805.20 is: 56,676.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.80 : 131,458.20 = 37,805.20 : x
  2. Step 2: Convert to fraction form
    87,686.80/131,458.20 = 37,805.20/x
  3. Step 3: Cross multiply
    87,686.80x = 131,458.20 × 37,805.20
  4. Step 4: Simplify right side
    87,686.80x = 4,969,803,542.64
  5. Step 5: Solve for x
    x = 4,969,803,542.64/87,686.80
  6. Step 6: Final answer
    x = 56,676.76

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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.