Home / 87,747.28-131,314.74-71,767.60

Finding the Fourth Proportional to 87,747.28, 131,314.74 and 71,767.60

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Solution

The fourth proportional to 87,747.28, 131,314.74 and 71,767.60 is: 107,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,747.28 : 131,314.74 = 71,767.60 : x
  2. Step 2: Convert to fraction form
    87,747.28/131,314.74 = 71,767.60/x
  3. Step 3: Cross multiply
    87,747.28x = 131,314.74 × 71,767.60
  4. Step 4: Simplify right side
    87,747.28x = 9,424,143,734.42
  5. Step 5: Solve for x
    x = 9,424,143,734.42/87,747.28
  6. Step 6: Final answer
    x = 107,400.98

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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.