Home / 87,836.10-131,840.55-43,512.90

Finding the Fourth Proportional to 87,836.10, 131,840.55 and 43,512.90

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Solution

The fourth proportional to 87,836.10, 131,840.55 and 43,512.90 is: 65,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,836.10 : 131,840.55 = 43,512.90 : x
  2. Step 2: Convert to fraction form
    87,836.10/131,840.55 = 43,512.90/x
  3. Step 3: Cross multiply
    87,836.10x = 131,840.55 × 43,512.90
  4. Step 4: Simplify right side
    87,836.10x = 5,736,764,668.10
  5. Step 5: Solve for x
    x = 5,736,764,668.10/87,836.10
  6. Step 6: Final answer
    x = 65,312.15

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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.