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Finding the Fourth Proportional to 79,180.75, 118,771.13 and 20,016.42

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Solution

The fourth proportional to 79,180.75, 118,771.13 and 20,016.42 is: 30,024.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,180.75 : 118,771.13 = 20,016.42 : x
  2. Step 2: Convert to fraction form
    79,180.75/118,771.13 = 20,016.42/x
  3. Step 3: Cross multiply
    79,180.75x = 118,771.13 × 20,016.42
  4. Step 4: Simplify right side
    79,180.75x = 2,377,373,107.83
  5. Step 5: Solve for x
    x = 2,377,373,107.83/79,180.75
  6. Step 6: Final answer
    x = 30,024.63

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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.