Home / 87,668.46-120,982.20-47,382.10

Finding the Fourth Proportional to 87,668.46, 120,982.20 and 47,382.10

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Solution

The fourth proportional to 87,668.46, 120,982.20 and 47,382.10 is: 65,387.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668.46 : 120,982.20 = 47,382.10 : x
  2. Step 2: Convert to fraction form
    87,668.46/120,982.20 = 47,382.10/x
  3. Step 3: Cross multiply
    87,668.46x = 120,982.20 × 47,382.10
  4. Step 4: Simplify right side
    87,668.46x = 5,732,390,698.62
  5. Step 5: Solve for x
    x = 5,732,390,698.62/87,668.46
  6. Step 6: Final answer
    x = 65,387.15

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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.