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Finding the Fourth Proportional to 79,767.81, 110,080.31 and 43,959.11

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Solution

The fourth proportional to 79,767.81, 110,080.31 and 43,959.11 is: 60,663.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,767.81 : 110,080.31 = 43,959.11 : x
  2. Step 2: Convert to fraction form
    79,767.81/110,080.31 = 43,959.11/x
  3. Step 3: Cross multiply
    79,767.81x = 110,080.31 × 43,959.11
  4. Step 4: Simplify right side
    79,767.81x = 4,839,031,685.93
  5. Step 5: Solve for x
    x = 4,839,031,685.93/79,767.81
  6. Step 6: Final answer
    x = 60,663.97

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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.