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Finding the Fourth Proportional to 79,769.20, 110,081.25 and 43,959.20

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Solution

The fourth proportional to 79,769.20, 110,081.25 and 43,959.20 is: 60,663.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,769.20 : 110,081.25 = 43,959.20 : x
  2. Step 2: Convert to fraction form
    79,769.20/110,081.25 = 43,959.20/x
  3. Step 3: Cross multiply
    79,769.20x = 110,081.25 × 43,959.20
  4. Step 4: Simplify right side
    79,769.20x = 4,839,083,134.59
  5. Step 5: Solve for x
    x = 4,839,083,134.59/79,769.20
  6. Step 6: Final answer
    x = 60,663.56

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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.