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Finding the Third Proportional to 30,108 and 66,208

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Solution

The third proportional to 30,108 and 66,208 is: 145,592.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,108 : 66,208 = 66,208 : x
  2. Step 2: Convert to fraction form
    30,108/66,208 = 66,208/x
  3. Step 3: Cross multiply
    30,108x = 66,208 × 66,208
  4. Step 4: Simplify right side
    30,108x = 4,383,499,264
  5. Step 5: Solve for x
    x = 4,383,499,264/30,108
  6. Step 6: Final answer
    x = 145,592.51

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.