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Finding the Fourth Proportional to 79,200.43, 118,789.48 and 20,032.45

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Solution

The fourth proportional to 79,200.43, 118,789.48 and 20,032.45 is: 30,045.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,200.43 : 118,789.48 = 20,032.45 : x
  2. Step 2: Convert to fraction form
    79,200.43/118,789.48 = 20,032.45/x
  3. Step 3: Cross multiply
    79,200.43x = 118,789.48 × 20,032.45
  4. Step 4: Simplify right side
    79,200.43x = 2,379,644,318.63
  5. Step 5: Solve for x
    x = 2,379,644,318.63/79,200.43
  6. Step 6: Final answer
    x = 30,045.85

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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.