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Finding the Fourth Proportional to 79,319.92, 118,976.46 and 26,729.20

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Solution

The fourth proportional to 79,319.92, 118,976.46 and 26,729.20 is: 40,092.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.92 : 118,976.46 = 26,729.20 : x
  2. Step 2: Convert to fraction form
    79,319.92/118,976.46 = 26,729.20/x
  3. Step 3: Cross multiply
    79,319.92x = 118,976.46 × 26,729.20
  4. Step 4: Simplify right side
    79,319.92x = 3,180,145,594.63
  5. Step 5: Solve for x
    x = 3,180,145,594.63/79,319.92
  6. Step 6: Final answer
    x = 40,092.65

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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.