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Finding the Fourth Proportional to 39,672, 54,747.36 and 22,008

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Solution

The fourth proportional to 39,672, 54,747.36 and 22,008 is: 30,371.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,672 : 54,747.36 = 22,008 : x
  2. Step 2: Convert to fraction form
    39,672/54,747.36 = 22,008/x
  3. Step 3: Cross multiply
    39,672x = 54,747.36 × 22,008
  4. Step 4: Simplify right side
    39,672x = 1,204,879,898.88
  5. Step 5: Solve for x
    x = 1,204,879,898.88/39,672
  6. Step 6: Final answer
    x = 30,371.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.