Home / 87,842.28-121,220.12-49,080.42

Finding the Fourth Proportional to 87,842.28, 121,220.12 and 49,080.42

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Solution

The fourth proportional to 87,842.28, 121,220.12 and 49,080.42 is: 67,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,842.28 : 121,220.12 = 49,080.42 : x
  2. Step 2: Convert to fraction form
    87,842.28/121,220.12 = 49,080.42/x
  3. Step 3: Cross multiply
    87,842.28x = 121,220.12 × 49,080.42
  4. Step 4: Simplify right side
    87,842.28x = 5,949,534,524.75
  5. Step 5: Solve for x
    x = 5,949,534,524.75/87,842.28
  6. Step 6: Final answer
    x = 67,729.73

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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.