Home / 87,512.40-131,049.90-57,769.20

Finding the Fourth Proportional to 87,512.40, 131,049.90 and 57,769.20

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Solution

The fourth proportional to 87,512.40, 131,049.90 and 57,769.20 is: 86,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,512.40 : 131,049.90 = 57,769.20 : x
  2. Step 2: Convert to fraction form
    87,512.40/131,049.90 = 57,769.20/x
  3. Step 3: Cross multiply
    87,512.40x = 131,049.90 × 57,769.20
  4. Step 4: Simplify right side
    87,512.40x = 7,570,647,883.08
  5. Step 5: Solve for x
    x = 7,570,647,883.08/87,512.40
  6. Step 6: Final answer
    x = 86,509.43

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1.5x scale

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.