Home / 107,859.75-161,790-32,979.61

Finding the Fourth Proportional to 107,859.75, 161,790 and 32,979.61

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Solution

The fourth proportional to 107,859.75, 161,790 and 32,979.61 is: 49,469.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,859.75 : 161,790 = 32,979.61 : x
  2. Step 2: Convert to fraction form
    107,859.75/161,790 = 32,979.61/x
  3. Step 3: Cross multiply
    107,859.75x = 161,790 × 32,979.61
  4. Step 4: Simplify right side
    107,859.75x = 5,335,771,101.90
  5. Step 5: Solve for x
    x = 5,335,771,101.90/107,859.75
  6. Step 6: Final answer
    x = 49,469.53

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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.