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Finding the Third Proportional to 18,783 and 40,698

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Solution

The third proportional to 18,783 and 40,698 is: 88,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783 : 40,698 = 40,698 : x
  2. Step 2: Convert to fraction form
    18,783/40,698 = 40,698/x
  3. Step 3: Cross multiply
    18,783x = 40,698 × 40,698
  4. Step 4: Simplify right side
    18,783x = 1,656,327,204
  5. Step 5: Solve for x
    x = 1,656,327,204/18,783
  6. Step 6: Final answer
    x = 88,182.25

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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.