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Finding the Third Proportional to 39,070 and 80,909

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Solution

The third proportional to 39,070 and 80,909 is: 167,552.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,070 : 80,909 = 80,909 : x
  2. Step 2: Convert to fraction form
    39,070/80,909 = 80,909/x
  3. Step 3: Cross multiply
    39,070x = 80,909 × 80,909
  4. Step 4: Simplify right side
    39,070x = 6,546,266,281
  5. Step 5: Solve for x
    x = 6,546,266,281/39,070
  6. Step 6: Final answer
    x = 167,552.25

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.