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Finding the Fourth Proportional to 72,116.74, 108,171.96 and 22,201.91

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Solution

The fourth proportional to 72,116.74, 108,171.96 and 22,201.91 is: 33,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,116.74 : 108,171.96 = 22,201.91 : x
  2. Step 2: Convert to fraction form
    72,116.74/108,171.96 = 22,201.91/x
  3. Step 3: Cross multiply
    72,116.74x = 108,171.96 × 22,201.91
  4. Step 4: Simplify right side
    72,116.74x = 2,401,624,120.44
  5. Step 5: Solve for x
    x = 2,401,624,120.44/72,116.74
  6. Step 6: Final answer
    x = 33,301.90

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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.