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Finding the Fourth Proportional to 72,042.15, 108,079.31 and 22,127.30

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Solution

The fourth proportional to 72,042.15, 108,079.31 and 22,127.30 is: 33,195.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042.15 : 108,079.31 = 22,127.30 : x
  2. Step 2: Convert to fraction form
    72,042.15/108,079.31 = 22,127.30/x
  3. Step 3: Cross multiply
    72,042.15x = 108,079.31 × 22,127.30
  4. Step 4: Simplify right side
    72,042.15x = 2,391,502,665.13
  5. Step 5: Solve for x
    x = 2,391,502,665.13/72,042.15
  6. Step 6: Final answer
    x = 33,195.88

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1.5x scale

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.