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Finding the Fourth Proportional to 79,759.43, 119,694.38 and 31,723.12

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Solution

The fourth proportional to 79,759.43, 119,694.38 and 31,723.12 is: 47,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,759.43 : 119,694.38 = 31,723.12 : x
  2. Step 2: Convert to fraction form
    79,759.43/119,694.38 = 31,723.12/x
  3. Step 3: Cross multiply
    79,759.43x = 119,694.38 × 31,723.12
  4. Step 4: Simplify right side
    79,759.43x = 3,797,079,180.07
  5. Step 5: Solve for x
    x = 3,797,079,180.07/79,759.43
  6. Step 6: Final answer
    x = 47,606.65

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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.