Home / 87,851.28-121,234.59-47,565.08

Finding the Fourth Proportional to 87,851.28, 121,234.59 and 47,565.08

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Solution

The fourth proportional to 87,851.28, 121,234.59 and 47,565.08 is: 65,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,851.28 : 121,234.59 = 47,565.08 : x
  2. Step 2: Convert to fraction form
    87,851.28/121,234.59 = 47,565.08/x
  3. Step 3: Cross multiply
    87,851.28x = 121,234.59 × 47,565.08
  4. Step 4: Simplify right side
    87,851.28x = 5,766,532,365.94
  5. Step 5: Solve for x
    x = 5,766,532,365.94/87,851.28
  6. Step 6: Final answer
    x = 65,639.71

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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.