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Finding the Fourth Proportional to 79,682.10, 109,979.97 and 45,689.97

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Solution

The fourth proportional to 79,682.10, 109,979.97 and 45,689.97 is: 63,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,682.10 : 109,979.97 = 45,689.97 : x
  2. Step 2: Convert to fraction form
    79,682.10/109,979.97 = 45,689.97/x
  3. Step 3: Cross multiply
    79,682.10x = 109,979.97 × 45,689.97
  4. Step 4: Simplify right side
    79,682.10x = 5,024,981,529.90
  5. Step 5: Solve for x
    x = 5,024,981,529.90/79,682.10
  6. Step 6: Final answer
    x = 63,062.87

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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.