Home / 87,902.16-121,305.12-52,109.76

Finding the Fourth Proportional to 87,902.16, 121,305.12 and 52,109.76

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Solution

The fourth proportional to 87,902.16, 121,305.12 and 52,109.76 is: 71,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,902.16 : 121,305.12 = 52,109.76 : x
  2. Step 2: Convert to fraction form
    87,902.16/121,305.12 = 52,109.76/x
  3. Step 3: Cross multiply
    87,902.16x = 121,305.12 × 52,109.76
  4. Step 4: Simplify right side
    87,902.16x = 6,321,180,689.97
  5. Step 5: Solve for x
    x = 6,321,180,689.97/87,902.16
  6. Step 6: Final answer
    x = 71,911.55

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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.