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Finding the Fourth Proportional to 78,467.92, 117,717.03 and 33,488.62

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Solution

The fourth proportional to 78,467.92, 117,717.03 and 33,488.62 is: 50,239.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,467.92 : 117,717.03 = 33,488.62 : x
  2. Step 2: Convert to fraction form
    78,467.92/117,717.03 = 33,488.62/x
  3. Step 3: Cross multiply
    78,467.92x = 117,717.03 × 33,488.62
  4. Step 4: Simplify right side
    78,467.92x = 3,942,180,296.61
  5. Step 5: Solve for x
    x = 3,942,180,296.61/78,467.92
  6. Step 6: Final answer
    x = 50,239.39

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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.