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Finding the Fourth Proportional to 78,247.92, 117,369.83 and 22,091.91

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Solution

The fourth proportional to 78,247.92, 117,369.83 and 22,091.91 is: 33,137.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,247.92 : 117,369.83 = 22,091.91 : x
  2. Step 2: Convert to fraction form
    78,247.92/117,369.83 = 22,091.91/x
  3. Step 3: Cross multiply
    78,247.92x = 117,369.83 × 22,091.91
  4. Step 4: Simplify right side
    78,247.92x = 2,592,923,610.62
  5. Step 5: Solve for x
    x = 2,592,923,610.62/78,247.92
  6. Step 6: Final answer
    x = 33,137.28

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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.