Home / 87,877-131,788.24-31,709.80

Finding the Fourth Proportional to 87,877, 131,788.24 and 31,709.80

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Solution

The fourth proportional to 87,877, 131,788.24 and 31,709.80 is: 47,554.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,877 : 131,788.24 = 31,709.80 : x
  2. Step 2: Convert to fraction form
    87,877/131,788.24 = 31,709.80/x
  3. Step 3: Cross multiply
    87,877x = 131,788.24 × 31,709.80
  4. Step 4: Simplify right side
    87,877x = 4,178,978,732.75
  5. Step 5: Solve for x
    x = 4,178,978,732.75/87,877
  6. Step 6: Final answer
    x = 47,554.86

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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.