Home / 87,620.52-131,351.92-31,447.42

Finding the Fourth Proportional to 87,620.52, 131,351.92 and 31,447.42

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Solution

The fourth proportional to 87,620.52, 131,351.92 and 31,447.42 is: 47,142.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.52 : 131,351.92 = 31,447.42 : x
  2. Step 2: Convert to fraction form
    87,620.52/131,351.92 = 31,447.42/x
  3. Step 3: Cross multiply
    87,620.52x = 131,351.92 × 31,447.42
  4. Step 4: Simplify right side
    87,620.52x = 4,130,678,996.05
  5. Step 5: Solve for x
    x = 4,130,678,996.05/87,620.52
  6. Step 6: Final answer
    x = 47,142.83

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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.