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Finding the Fourth Proportional to 79,191.27, 118,790.91 and 20,027.43

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Solution

The fourth proportional to 79,191.27, 118,790.91 and 20,027.43 is: 30,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,191.27 : 118,790.91 = 20,027.43 : x
  2. Step 2: Convert to fraction form
    79,191.27/118,790.91 = 20,027.43/x
  3. Step 3: Cross multiply
    79,191.27x = 118,790.91 × 20,027.43
  4. Step 4: Simplify right side
    79,191.27x = 2,379,076,634.66
  5. Step 5: Solve for x
    x = 2,379,076,634.66/79,191.27
  6. Step 6: Final answer
    x = 30,042.16

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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.