Home / 87,517.28-131,288.80-28,333.28

Finding the Fourth Proportional to 87,517.28, 131,288.80 and 28,333.28

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Solution

The fourth proportional to 87,517.28, 131,288.80 and 28,333.28 is: 42,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,517.28 : 131,288.80 = 28,333.28 : x
  2. Step 2: Convert to fraction form
    87,517.28/131,288.80 = 28,333.28/x
  3. Step 3: Cross multiply
    87,517.28x = 131,288.80 × 28,333.28
  4. Step 4: Simplify right side
    87,517.28x = 3,719,842,331.26
  5. Step 5: Solve for x
    x = 3,719,842,331.26/87,517.28
  6. Step 6: Final answer
    x = 42,504.09

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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.