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Finding the Third Proportional to 30,370 and 66,718

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Solution

The third proportional to 30,370 and 66,718 is: 146,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,370 : 66,718 = 66,718 : x
  2. Step 2: Convert to fraction form
    30,370/66,718 = 66,718/x
  3. Step 3: Cross multiply
    30,370x = 66,718 × 66,718
  4. Step 4: Simplify right side
    30,370x = 4,451,291,524
  5. Step 5: Solve for x
    x = 4,451,291,524/30,370
  6. Step 6: Final answer
    x = 146,568.70

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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.