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Finding the Fourth Proportional to 84,338.56, 126,480.96 and 34,418.56

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Solution

The fourth proportional to 84,338.56, 126,480.96 and 34,418.56 is: 51,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,338.56 : 126,480.96 = 34,418.56 : x
  2. Step 2: Convert to fraction form
    84,338.56/126,480.96 = 34,418.56/x
  3. Step 3: Cross multiply
    84,338.56x = 126,480.96 × 34,418.56
  4. Step 4: Simplify right side
    84,338.56x = 4,353,292,510.62
  5. Step 5: Solve for x
    x = 4,353,292,510.62/84,338.56
  6. Step 6: Final answer
    x = 51,616.87

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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.