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Finding the Third Proportional to 20,007 and 43,115

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Solution

The third proportional to 20,007 and 43,115 is: 92,912.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007 : 43,115 = 43,115 : x
  2. Step 2: Convert to fraction form
    20,007/43,115 = 43,115/x
  3. Step 3: Cross multiply
    20,007x = 43,115 × 43,115
  4. Step 4: Simplify right side
    20,007x = 1,858,903,225
  5. Step 5: Solve for x
    x = 1,858,903,225/20,007
  6. Step 6: Final answer
    x = 92,912.64

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.