Home / 87,684.39-121,016.31-49,451.79

Finding the Fourth Proportional to 87,684.39, 121,016.31 and 49,451.79

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Solution

The fourth proportional to 87,684.39, 121,016.31 and 49,451.79 is: 68,250.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,684.39 : 121,016.31 = 49,451.79 : x
  2. Step 2: Convert to fraction form
    87,684.39/121,016.31 = 49,451.79/x
  3. Step 3: Cross multiply
    87,684.39x = 121,016.31 × 49,451.79
  4. Step 4: Simplify right side
    87,684.39x = 5,984,473,148.69
  5. Step 5: Solve for x
    x = 5,984,473,148.69/87,684.39
  6. Step 6: Final answer
    x = 68,250.15

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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.