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Finding the Third Proportional to 56,517.75 and 138,469.50

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Solution

The third proportional to 56,517.75 and 138,469.50 is: 339,252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,517.75 : 138,469.50 = 138,469.50 : x
  2. Step 2: Convert to fraction form
    56,517.75/138,469.50 = 138,469.50/x
  3. Step 3: Cross multiply
    56,517.75x = 138,469.50 × 138,469.50
  4. Step 4: Simplify right side
    56,517.75x = 19,173,802,430.25
  5. Step 5: Solve for x
    x = 19,173,802,430.25/56,517.75
  6. Step 6: Final answer
    x = 339,252.76

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Why These Related Problems?

These problems maintain the same ratio (2.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.