Home / 87,517.20-131,275.80-43,165.20

Finding the Fourth Proportional to 87,517.20, 131,275.80 and 43,165.20

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Solution

The fourth proportional to 87,517.20, 131,275.80 and 43,165.20 is: 64,747.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,517.20 : 131,275.80 = 43,165.20 : x
  2. Step 2: Convert to fraction form
    87,517.20/131,275.80 = 43,165.20/x
  3. Step 3: Cross multiply
    87,517.20x = 131,275.80 × 43,165.20
  4. Step 4: Simplify right side
    87,517.20x = 5,666,546,162.16
  5. Step 5: Solve for x
    x = 5,666,546,162.16/87,517.20
  6. Step 6: Final answer
    x = 64,747.80

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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.