Home / 87,447.62-130,489.39-78,022.85

Finding the Fourth Proportional to 87,447.62, 130,489.39 and 78,022.85

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Solution

The fourth proportional to 87,447.62, 130,489.39 and 78,022.85 is: 116,425.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,447.62 : 130,489.39 = 78,022.85 : x
  2. Step 2: Convert to fraction form
    87,447.62/130,489.39 = 78,022.85/x
  3. Step 3: Cross multiply
    87,447.62x = 130,489.39 × 78,022.85
  4. Step 4: Simplify right side
    87,447.62x = 10,181,153,060.00
  5. Step 5: Solve for x
    x = 10,181,153,060.00/87,447.62
  6. Step 6: Final answer
    x = 116,425.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.