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Finding the Fourth Proportional to 68,944.85, 103,404.95 and 18,344.16

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Solution

The fourth proportional to 68,944.85, 103,404.95 and 18,344.16 is: 27,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,944.85 : 103,404.95 = 18,344.16 : x
  2. Step 2: Convert to fraction form
    68,944.85/103,404.95 = 18,344.16/x
  3. Step 3: Cross multiply
    68,944.85x = 103,404.95 × 18,344.16
  4. Step 4: Simplify right side
    68,944.85x = 1,896,876,947.59
  5. Step 5: Solve for x
    x = 1,896,876,947.59/68,944.85
  6. Step 6: Final answer
    x = 27,512.96

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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.