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Finding the Third Proportional to 66,784 and 100,008

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Solution

The third proportional to 66,784 and 100,008 is: 149,760.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,784 : 100,008 = 100,008 : x
  2. Step 2: Convert to fraction form
    66,784/100,008 = 100,008/x
  3. Step 3: Cross multiply
    66,784x = 100,008 × 100,008
  4. Step 4: Simplify right side
    66,784x = 10,001,600,064
  5. Step 5: Solve for x
    x = 10,001,600,064/66,784
  6. Step 6: Final answer
    x = 149,760.42

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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.