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Finding the Fourth Proportional to 72,042.21, 108,079.11 and 22,126.06

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Solution

The fourth proportional to 72,042.21, 108,079.11 and 22,126.06 is: 33,193.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042.21 : 108,079.11 = 22,126.06 : x
  2. Step 2: Convert to fraction form
    72,042.21/108,079.11 = 22,126.06/x
  3. Step 3: Cross multiply
    72,042.21x = 108,079.11 × 22,126.06
  4. Step 4: Simplify right side
    72,042.21x = 2,391,365,007.71
  5. Step 5: Solve for x
    x = 2,391,365,007.71/72,042.21
  6. Step 6: Final answer
    x = 33,193.94

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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.