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Finding the Third Proportional to 30,147 and 65,481.75

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Solution

The third proportional to 30,147 and 65,481.75 is: 142,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147 : 65,481.75 = 65,481.75 : x
  2. Step 2: Convert to fraction form
    30,147/65,481.75 = 65,481.75/x
  3. Step 3: Cross multiply
    30,147x = 65,481.75 × 65,481.75
  4. Step 4: Simplify right side
    30,147x = 4,287,859,583.06
  5. Step 5: Solve for x
    x = 4,287,859,583.06/30,147
  6. Step 6: Final answer
    x = 142,231.72

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.