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Finding the Third Proportional to 18,907 and 40,891

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Solution

The third proportional to 18,907 and 40,891 is: 88,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907 : 40,891 = 40,891 : x
  2. Step 2: Convert to fraction form
    18,907/40,891 = 40,891/x
  3. Step 3: Cross multiply
    18,907x = 40,891 × 40,891
  4. Step 4: Simplify right side
    18,907x = 1,672,073,881
  5. Step 5: Solve for x
    x = 1,672,073,881/18,907
  6. Step 6: Final answer
    x = 88,436.76

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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.