Home / 87,869.90-131,711.79-28,689.68

Finding the Fourth Proportional to 87,869.90, 131,711.79 and 28,689.68

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Solution

The fourth proportional to 87,869.90, 131,711.79 and 28,689.68 is: 43,004.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,869.90 : 131,711.79 = 28,689.68 : x
  2. Step 2: Convert to fraction form
    87,869.90/131,711.79 = 28,689.68/x
  3. Step 3: Cross multiply
    87,869.90x = 131,711.79 × 28,689.68
  4. Step 4: Simplify right side
    87,869.90x = 3,778,769,107.33
  5. Step 5: Solve for x
    x = 3,778,769,107.33/87,869.90
  6. Step 6: Final answer
    x = 43,004.14

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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.