Home / 87,867.90-131,708.79-28,687.68

Finding the Fourth Proportional to 87,867.90, 131,708.79 and 28,687.68

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Solution

The fourth proportional to 87,867.90, 131,708.79 and 28,687.68 is: 43,001.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,867.90 : 131,708.79 = 28,687.68 : x
  2. Step 2: Convert to fraction form
    87,867.90/131,708.79 = 28,687.68/x
  3. Step 3: Cross multiply
    87,867.90x = 131,708.79 × 28,687.68
  4. Step 4: Simplify right side
    87,867.90x = 3,778,419,620.71
  5. Step 5: Solve for x
    x = 3,778,419,620.71/87,867.90
  6. Step 6: Final answer
    x = 43,001.14

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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.