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Finding the Third Proportional to 66,922 and 89,219

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Solution

The third proportional to 66,922 and 89,219 is: 118,944.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,922 : 89,219 = 89,219 : x
  2. Step 2: Convert to fraction form
    66,922/89,219 = 89,219/x
  3. Step 3: Cross multiply
    66,922x = 89,219 × 89,219
  4. Step 4: Simplify right side
    66,922x = 7,960,029,961
  5. Step 5: Solve for x
    x = 7,960,029,961/66,922
  6. Step 6: Final answer
    x = 118,944.89

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.