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Finding the Third Proportional to 40,620 and 61,722

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Solution

The third proportional to 40,620 and 61,722 is: 93,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,620 : 61,722 = 61,722 : x
  2. Step 2: Convert to fraction form
    40,620/61,722 = 61,722/x
  3. Step 3: Cross multiply
    40,620x = 61,722 × 61,722
  4. Step 4: Simplify right side
    40,620x = 3,809,605,284
  5. Step 5: Solve for x
    x = 3,809,605,284/40,620
  6. Step 6: Final answer
    x = 93,786.44

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.