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Finding the Fourth Proportional to 79,957.80, 119,904.30 and 27,340.20

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Solution

The fourth proportional to 79,957.80, 119,904.30 and 27,340.20 is: 40,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,957.80 : 119,904.30 = 27,340.20 : x
  2. Step 2: Convert to fraction form
    79,957.80/119,904.30 = 27,340.20/x
  3. Step 3: Cross multiply
    79,957.80x = 119,904.30 × 27,340.20
  4. Step 4: Simplify right side
    79,957.80x = 3,278,207,542.86
  5. Step 5: Solve for x
    x = 3,278,207,542.86/79,957.80
  6. Step 6: Final answer
    x = 40,999.22

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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.