Home / 87,715.50-121,047.20-49,474.92

Finding the Fourth Proportional to 87,715.50, 121,047.20 and 49,474.92

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Solution

The fourth proportional to 87,715.50, 121,047.20 and 49,474.92 is: 68,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,715.50 : 121,047.20 = 49,474.92 : x
  2. Step 2: Convert to fraction form
    87,715.50/121,047.20 = 49,474.92/x
  3. Step 3: Cross multiply
    87,715.50x = 121,047.20 × 49,474.92
  4. Step 4: Simplify right side
    87,715.50x = 5,988,800,928.31
  5. Step 5: Solve for x
    x = 5,988,800,928.31/87,715.50
  6. Step 6: Final answer
    x = 68,275.29

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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.