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Finding the Third Proportional to 40,743 and 86,439.75

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Solution

The third proportional to 40,743 and 86,439.75 is: 183,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,743 : 86,439.75 = 86,439.75 : x
  2. Step 2: Convert to fraction form
    40,743/86,439.75 = 86,439.75/x
  3. Step 3: Cross multiply
    40,743x = 86,439.75 × 86,439.75
  4. Step 4: Simplify right side
    40,743x = 7,471,830,380.06
  5. Step 5: Solve for x
    x = 7,471,830,380.06/40,743
  6. Step 6: Final answer
    x = 183,389.30

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.