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Finding the Third Proportional to 38,799 and 78,678

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Solution

The third proportional to 38,799 and 78,678 is: 159,546.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,799 : 78,678 = 78,678 : x
  2. Step 2: Convert to fraction form
    38,799/78,678 = 78,678/x
  3. Step 3: Cross multiply
    38,799x = 78,678 × 78,678
  4. Step 4: Simplify right side
    38,799x = 6,190,227,684
  5. Step 5: Solve for x
    x = 6,190,227,684/38,799
  6. Step 6: Final answer
    x = 159,546.06

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.