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Finding the Third Proportional to 66,418 and 98,684

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Solution

The third proportional to 66,418 and 98,684 is: 146,624.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,418 : 98,684 = 98,684 : x
  2. Step 2: Convert to fraction form
    66,418/98,684 = 98,684/x
  3. Step 3: Cross multiply
    66,418x = 98,684 × 98,684
  4. Step 4: Simplify right side
    66,418x = 9,738,531,856
  5. Step 5: Solve for x
    x = 9,738,531,856/66,418
  6. Step 6: Final answer
    x = 146,624.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.