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Finding the Fourth Proportional to 79,957.26, 120,009.33 and 40,542.66

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Solution

The fourth proportional to 79,957.26, 120,009.33 and 40,542.66 is: 60,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,957.26 : 120,009.33 = 40,542.66 : x
  2. Step 2: Convert to fraction form
    79,957.26/120,009.33 = 40,542.66/x
  3. Step 3: Cross multiply
    79,957.26x = 120,009.33 × 40,542.66
  4. Step 4: Simplify right side
    79,957.26x = 4,865,497,463.02
  5. Step 5: Solve for x
    x = 4,865,497,463.02/79,957.26
  6. Step 6: Final answer
    x = 60,851.23

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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.