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Finding the Third Proportional to 39,672 and 86,625

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Solution

The third proportional to 39,672 and 86,625 is: 189,148.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,672 : 86,625 = 86,625 : x
  2. Step 2: Convert to fraction form
    39,672/86,625 = 86,625/x
  3. Step 3: Cross multiply
    39,672x = 86,625 × 86,625
  4. Step 4: Simplify right side
    39,672x = 7,503,890,625
  5. Step 5: Solve for x
    x = 7,503,890,625/39,672
  6. Step 6: Final answer
    x = 189,148.28

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.