Home / 87,078.05-130,617.06-69,658.59

Finding the Fourth Proportional to 87,078.05, 130,617.06 and 69,658.59

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Solution

The fourth proportional to 87,078.05, 130,617.06 and 69,658.59 is: 104,487.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,078.05 : 130,617.06 = 69,658.59 : x
  2. Step 2: Convert to fraction form
    87,078.05/130,617.06 = 69,658.59/x
  3. Step 3: Cross multiply
    87,078.05x = 130,617.06 × 69,658.59
  4. Step 4: Simplify right side
    87,078.05x = 9,098,600,229.55
  5. Step 5: Solve for x
    x = 9,098,600,229.55/87,078.05
  6. Step 6: Final answer
    x = 104,487.87

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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.