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Finding the Third Proportional to 45,388 and 66,622

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Solution

The third proportional to 45,388 and 66,622 is: 97,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,388 : 66,622 = 66,622 : x
  2. Step 2: Convert to fraction form
    45,388/66,622 = 66,622/x
  3. Step 3: Cross multiply
    45,388x = 66,622 × 66,622
  4. Step 4: Simplify right side
    45,388x = 4,438,490,884
  5. Step 5: Solve for x
    x = 4,438,490,884/45,388
  6. Step 6: Final answer
    x = 97,789.96

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.