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Finding the Third Proportional to 43,890 and 66,270.75

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Solution

The third proportional to 43,890 and 66,270.75 is: 100,064.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,890 : 66,270.75 = 66,270.75 : x
  2. Step 2: Convert to fraction form
    43,890/66,270.75 = 66,270.75/x
  3. Step 3: Cross multiply
    43,890x = 66,270.75 × 66,270.75
  4. Step 4: Simplify right side
    43,890x = 4,391,812,305.56
  5. Step 5: Solve for x
    x = 4,391,812,305.56/43,890
  6. Step 6: Final answer
    x = 100,064.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.