Home / 82,979.43-124,469.17-20,649.93

Finding the Fourth Proportional to 82,979.43, 124,469.17 and 20,649.93

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Solution

The fourth proportional to 82,979.43, 124,469.17 and 20,649.93 is: 30,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,979.43 : 124,469.17 = 20,649.93 : x
  2. Step 2: Convert to fraction form
    82,979.43/124,469.17 = 20,649.93/x
  3. Step 3: Cross multiply
    82,979.43x = 124,469.17 × 20,649.93
  4. Step 4: Simplify right side
    82,979.43x = 2,570,279,647.66
  5. Step 5: Solve for x
    x = 2,570,279,647.66/82,979.43
  6. Step 6: Final answer
    x = 30,974.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.