Home / 87,475.08-131,439.42-76,411.56

Finding the Fourth Proportional to 87,475.08, 131,439.42 and 76,411.56

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Solution

The fourth proportional to 87,475.08, 131,439.42 and 76,411.56 is: 114,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,475.08 : 131,439.42 = 76,411.56 : x
  2. Step 2: Convert to fraction form
    87,475.08/131,439.42 = 76,411.56/x
  3. Step 3: Cross multiply
    87,475.08x = 131,439.42 × 76,411.56
  4. Step 4: Simplify right side
    87,475.08x = 10,043,491,127.70
  5. Step 5: Solve for x
    x = 10,043,491,127.70/87,475.08
  6. Step 6: Final answer
    x = 114,815.46

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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.