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Finding the Third Proportional to 40,431.75 and 71,910.75

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Solution

The third proportional to 40,431.75 and 71,910.75 is: 127,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,431.75 : 71,910.75 = 71,910.75 : x
  2. Step 2: Convert to fraction form
    40,431.75/71,910.75 = 71,910.75/x
  3. Step 3: Cross multiply
    40,431.75x = 71,910.75 × 71,910.75
  4. Step 4: Simplify right side
    40,431.75x = 5,171,155,965.56
  5. Step 5: Solve for x
    x = 5,171,155,965.56/40,431.75
  6. Step 6: Final answer
    x = 127,898.40

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.