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Finding the Fourth Proportional to 84,633.55, 126,917.51 and 45,169.13

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Solution

The fourth proportional to 84,633.55, 126,917.51 and 45,169.13 is: 67,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,633.55 : 126,917.51 = 45,169.13 : x
  2. Step 2: Convert to fraction form
    84,633.55/126,917.51 = 45,169.13/x
  3. Step 3: Cross multiply
    84,633.55x = 126,917.51 × 45,169.13
  4. Step 4: Simplify right side
    84,633.55x = 5,732,753,599.91
  5. Step 5: Solve for x
    x = 5,732,753,599.91/84,633.55
  6. Step 6: Final answer
    x = 67,736.18

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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.