Home / 87,863.20-131,615.60-54,480.80

Finding the Fourth Proportional to 87,863.20, 131,615.60 and 54,480.80

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Solution

The fourth proportional to 87,863.20, 131,615.60 and 54,480.80 is: 81,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,863.20 : 131,615.60 = 54,480.80 : x
  2. Step 2: Convert to fraction form
    87,863.20/131,615.60 = 54,480.80/x
  3. Step 3: Cross multiply
    87,863.20x = 131,615.60 × 54,480.80
  4. Step 4: Simplify right side
    87,863.20x = 7,170,523,180.48
  5. Step 5: Solve for x
    x = 7,170,523,180.48/87,863.20
  6. Step 6: Final answer
    x = 81,610.08

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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.