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Finding the Third Proportional to 39,747.75 and 55,707

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Solution

The third proportional to 39,747.75 and 55,707 is: 78,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,747.75 : 55,707 = 55,707 : x
  2. Step 2: Convert to fraction form
    39,747.75/55,707 = 55,707/x
  3. Step 3: Cross multiply
    39,747.75x = 55,707 × 55,707
  4. Step 4: Simplify right side
    39,747.75x = 3,103,269,849
  5. Step 5: Solve for x
    x = 3,103,269,849/39,747.75
  6. Step 6: Final answer
    x = 78,074.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.