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Finding the Third Proportional to 66,021 and 99,348

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Solution

The third proportional to 66,021 and 99,348 is: 149,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021 : 99,348 = 99,348 : x
  2. Step 2: Convert to fraction form
    66,021/99,348 = 99,348/x
  3. Step 3: Cross multiply
    66,021x = 99,348 × 99,348
  4. Step 4: Simplify right side
    66,021x = 9,870,025,104
  5. Step 5: Solve for x
    x = 9,870,025,104/66,021
  6. Step 6: Final answer
    x = 149,498.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.