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Finding the Fourth Proportional to 84,069.69, 126,141.68 and 44,079.12

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Solution

The fourth proportional to 84,069.69, 126,141.68 and 44,079.12 is: 66,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,069.69 : 126,141.68 = 44,079.12 : x
  2. Step 2: Convert to fraction form
    84,069.69/126,141.68 = 44,079.12/x
  3. Step 3: Cross multiply
    84,069.69x = 126,141.68 × 44,079.12
  4. Step 4: Simplify right side
    84,069.69x = 5,560,213,619.01
  5. Step 5: Solve for x
    x = 5,560,213,619.01/84,069.69
  6. Step 6: Final answer
    x = 66,138.15

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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.