Home / 87,861.78-121,251.33-50,139.54

Finding the Fourth Proportional to 87,861.78, 121,251.33 and 50,139.54

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Solution

The fourth proportional to 87,861.78, 121,251.33 and 50,139.54 is: 69,193.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.78 : 121,251.33 = 50,139.54 : x
  2. Step 2: Convert to fraction form
    87,861.78/121,251.33 = 50,139.54/x
  3. Step 3: Cross multiply
    87,861.78x = 121,251.33 × 50,139.54
  4. Step 4: Simplify right side
    87,861.78x = 6,079,485,910.59
  5. Step 5: Solve for x
    x = 6,079,485,910.59/87,861.78
  6. Step 6: Final answer
    x = 69,193.75

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1.5x scale

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.