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Finding the Third Proportional to 20,999.25 and 40,965.75

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Solution

The third proportional to 20,999.25 and 40,965.75 is: 79,916.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.25 : 40,965.75 = 40,965.75 : x
  2. Step 2: Convert to fraction form
    20,999.25/40,965.75 = 40,965.75/x
  3. Step 3: Cross multiply
    20,999.25x = 40,965.75 × 40,965.75
  4. Step 4: Simplify right side
    20,999.25x = 1,678,192,673.06
  5. Step 5: Solve for x
    x = 1,678,192,673.06/20,999.25
  6. Step 6: Final answer
    x = 79,916.79

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.