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Finding the Third Proportional to 43,745 and 67,865

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Solution

The third proportional to 43,745 and 67,865 is: 105,284.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,745 : 67,865 = 67,865 : x
  2. Step 2: Convert to fraction form
    43,745/67,865 = 67,865/x
  3. Step 3: Cross multiply
    43,745x = 67,865 × 67,865
  4. Step 4: Simplify right side
    43,745x = 4,605,658,225
  5. Step 5: Solve for x
    x = 4,605,658,225/43,745
  6. Step 6: Final answer
    x = 105,284.22

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.