Home / 87,815.92-121,174.68-50,087.92

Finding the Fourth Proportional to 87,815.92, 121,174.68 and 50,087.92

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Solution

The fourth proportional to 87,815.92, 121,174.68 and 50,087.92 is: 69,114.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.92 : 121,174.68 = 50,087.92 : x
  2. Step 2: Convert to fraction form
    87,815.92/121,174.68 = 50,087.92/x
  3. Step 3: Cross multiply
    87,815.92x = 121,174.68 × 50,087.92
  4. Step 4: Simplify right side
    87,815.92x = 6,069,387,677.87
  5. Step 5: Solve for x
    x = 6,069,387,677.87/87,815.92
  6. Step 6: Final answer
    x = 69,114.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.