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Finding the Third Proportional to 39,693 and 54,679.50

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Solution

The third proportional to 39,693 and 54,679.50 is: 75,324.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693 : 54,679.50 = 54,679.50 : x
  2. Step 2: Convert to fraction form
    39,693/54,679.50 = 54,679.50/x
  3. Step 3: Cross multiply
    39,693x = 54,679.50 × 54,679.50
  4. Step 4: Simplify right side
    39,693x = 2,989,847,720.25
  5. Step 5: Solve for x
    x = 2,989,847,720.25/39,693
  6. Step 6: Final answer
    x = 75,324.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.