Home / 87,660.12-131,507.46-28,491.96

Finding the Fourth Proportional to 87,660.12, 131,507.46 and 28,491.96

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Solution

The fourth proportional to 87,660.12, 131,507.46 and 28,491.96 is: 42,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660.12 : 131,507.46 = 28,491.96 : x
  2. Step 2: Convert to fraction form
    87,660.12/131,507.46 = 28,491.96/x
  3. Step 3: Cross multiply
    87,660.12x = 131,507.46 × 28,491.96
  4. Step 4: Simplify right side
    87,660.12x = 3,746,905,290.02
  5. Step 5: Solve for x
    x = 3,746,905,290.02/87,660.12
  6. Step 6: Final answer
    x = 42,743.56

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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.