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Finding the Third Proportional to 18,825 and 40,930

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Solution

The third proportional to 18,825 and 40,930 is: 88,991.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825 : 40,930 = 40,930 : x
  2. Step 2: Convert to fraction form
    18,825/40,930 = 40,930/x
  3. Step 3: Cross multiply
    18,825x = 40,930 × 40,930
  4. Step 4: Simplify right side
    18,825x = 1,675,264,900
  5. Step 5: Solve for x
    x = 1,675,264,900/18,825
  6. Step 6: Final answer
    x = 88,991.50

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.