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Finding the Fourth Proportional to 84,080.52, 126,105.66 and 21,747.24

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Solution

The fourth proportional to 84,080.52, 126,105.66 and 21,747.24 is: 32,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,080.52 : 126,105.66 = 21,747.24 : x
  2. Step 2: Convert to fraction form
    84,080.52/126,105.66 = 21,747.24/x
  3. Step 3: Cross multiply
    84,080.52x = 126,105.66 × 21,747.24
  4. Step 4: Simplify right side
    84,080.52x = 2,742,450,053.38
  5. Step 5: Solve for x
    x = 2,742,450,053.38/84,080.52
  6. Step 6: Final answer
    x = 32,616.95

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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.