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Finding the Third Proportional to 30,208 and 66,440

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Solution

The third proportional to 30,208 and 66,440 is: 146,129.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,208 : 66,440 = 66,440 : x
  2. Step 2: Convert to fraction form
    30,208/66,440 = 66,440/x
  3. Step 3: Cross multiply
    30,208x = 66,440 × 66,440
  4. Step 4: Simplify right side
    30,208x = 4,414,273,600
  5. Step 5: Solve for x
    x = 4,414,273,600/30,208
  6. Step 6: Final answer
    x = 146,129.29

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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.