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Finding the Fourth Proportional to 79,694.70, 109,979.02 and 47,864.13

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Solution

The fourth proportional to 79,694.70, 109,979.02 and 47,864.13 is: 66,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,694.70 : 109,979.02 = 47,864.13 : x
  2. Step 2: Convert to fraction form
    79,694.70/109,979.02 = 47,864.13/x
  3. Step 3: Cross multiply
    79,694.70x = 109,979.02 × 47,864.13
  4. Step 4: Simplify right side
    79,694.70x = 5,264,050,110.55
  5. Step 5: Solve for x
    x = 5,264,050,110.55/79,694.70
  6. Step 6: Final answer
    x = 66,052.70

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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.