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Finding the Third Proportional to 66,900 and 89,268

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Solution

The third proportional to 66,900 and 89,268 is: 119,114.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,900 : 89,268 = 89,268 : x
  2. Step 2: Convert to fraction form
    66,900/89,268 = 89,268/x
  3. Step 3: Cross multiply
    66,900x = 89,268 × 89,268
  4. Step 4: Simplify right side
    66,900x = 7,968,775,824
  5. Step 5: Solve for x
    x = 7,968,775,824/66,900
  6. Step 6: Final answer
    x = 119,114.74

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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.