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Finding the Third Proportional to 42,687 and 92,212

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Solution

The third proportional to 42,687 and 92,212 is: 199,195.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,687 : 92,212 = 92,212 : x
  2. Step 2: Convert to fraction form
    42,687/92,212 = 92,212/x
  3. Step 3: Cross multiply
    42,687x = 92,212 × 92,212
  4. Step 4: Simplify right side
    42,687x = 8,503,052,944
  5. Step 5: Solve for x
    x = 8,503,052,944/42,687
  6. Step 6: Final answer
    x = 199,195.37

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.