Home / 87,519.28-131,291.80-28,335.28

Finding the Fourth Proportional to 87,519.28, 131,291.80 and 28,335.28

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Solution

The fourth proportional to 87,519.28, 131,291.80 and 28,335.28 is: 42,507.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,519.28 : 131,291.80 = 28,335.28 : x
  2. Step 2: Convert to fraction form
    87,519.28/131,291.80 = 28,335.28/x
  3. Step 3: Cross multiply
    87,519.28x = 131,291.80 × 28,335.28
  4. Step 4: Simplify right side
    87,519.28x = 3,720,189,914.70
  5. Step 5: Solve for x
    x = 3,720,189,914.70/87,519.28
  6. Step 6: Final answer
    x = 42,507.09

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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.