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Finding the Third Proportional to 39,809 and 54,099

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Solution

The third proportional to 39,809 and 54,099 is: 73,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,809 : 54,099 = 54,099 : x
  2. Step 2: Convert to fraction form
    39,809/54,099 = 54,099/x
  3. Step 3: Cross multiply
    39,809x = 54,099 × 54,099
  4. Step 4: Simplify right side
    39,809x = 2,926,701,801
  5. Step 5: Solve for x
    x = 2,926,701,801/39,809
  6. Step 6: Final answer
    x = 73,518.60

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.