Home / 87,767.28-131,344.74-71,787.60

Finding the Fourth Proportional to 87,767.28, 131,344.74 and 71,787.60

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Solution

The fourth proportional to 87,767.28, 131,344.74 and 71,787.60 is: 107,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,767.28 : 131,344.74 = 71,787.60 : x
  2. Step 2: Convert to fraction form
    87,767.28/131,344.74 = 71,787.60/x
  3. Step 3: Cross multiply
    87,767.28x = 131,344.74 × 71,787.60
  4. Step 4: Simplify right side
    87,767.28x = 9,428,923,657.22
  5. Step 5: Solve for x
    x = 9,428,923,657.22/87,767.28
  6. Step 6: Final answer
    x = 107,430.97

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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.