Home / 87,777.28-131,359.68-71,797.60

Finding the Fourth Proportional to 87,777.28, 131,359.68 and 71,797.60

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Solution

The fourth proportional to 87,777.28, 131,359.68 and 71,797.60 is: 107,445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,777.28 : 131,359.68 = 71,797.60 : x
  2. Step 2: Convert to fraction form
    87,777.28/131,359.68 = 71,797.60/x
  3. Step 3: Cross multiply
    87,777.28x = 131,359.68 × 71,797.60
  4. Step 4: Simplify right side
    87,777.28x = 9,431,309,760.77
  5. Step 5: Solve for x
    x = 9,431,309,760.77/87,777.28
  6. Step 6: Final answer
    x = 107,445.91

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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.