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Finding the Fourth Proportional to 78,249.81, 117,372.62 and 22,093.79

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Solution

The fourth proportional to 78,249.81, 117,372.62 and 22,093.79 is: 33,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,249.81 : 117,372.62 = 22,093.79 : x
  2. Step 2: Convert to fraction form
    78,249.81/117,372.62 = 22,093.79/x
  3. Step 3: Cross multiply
    78,249.81x = 117,372.62 × 22,093.79
  4. Step 4: Simplify right side
    78,249.81x = 2,593,206,366.70
  5. Step 5: Solve for x
    x = 2,593,206,366.70/78,249.81
  6. Step 6: Final answer
    x = 33,140.10

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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.