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Finding the Fourth Proportional to 72,181.92, 108,291.54 and 22,260.90

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Solution

The fourth proportional to 72,181.92, 108,291.54 and 22,260.90 is: 33,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,181.92 : 108,291.54 = 22,260.90 : x
  2. Step 2: Convert to fraction form
    72,181.92/108,291.54 = 22,260.90/x
  3. Step 3: Cross multiply
    72,181.92x = 108,291.54 × 22,260.90
  4. Step 4: Simplify right side
    72,181.92x = 2,410,667,142.79
  5. Step 5: Solve for x
    x = 2,410,667,142.79/72,181.92
  6. Step 6: Final answer
    x = 33,397.10

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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.