Home / 87,685.52-121,005.78-49,960.04

Finding the Fourth Proportional to 87,685.52, 121,005.78 and 49,960.04

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Solution

The fourth proportional to 87,685.52, 121,005.78 and 49,960.04 is: 68,944.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,685.52 : 121,005.78 = 49,960.04 : x
  2. Step 2: Convert to fraction form
    87,685.52/121,005.78 = 49,960.04/x
  3. Step 3: Cross multiply
    87,685.52x = 121,005.78 × 49,960.04
  4. Step 4: Simplify right side
    87,685.52x = 6,045,453,609.03
  5. Step 5: Solve for x
    x = 6,045,453,609.03/87,685.52
  6. Step 6: Final answer
    x = 68,944.72

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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.