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Finding the Third Proportional to 43,292 and 66,405

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Solution

The third proportional to 43,292 and 66,405 is: 101,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,292 : 66,405 = 66,405 : x
  2. Step 2: Convert to fraction form
    43,292/66,405 = 66,405/x
  3. Step 3: Cross multiply
    43,292x = 66,405 × 66,405
  4. Step 4: Simplify right side
    43,292x = 4,409,624,025
  5. Step 5: Solve for x
    x = 4,409,624,025/43,292
  6. Step 6: Final answer
    x = 101,857.71

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.