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Finding the Third Proportional to 54,912 and 74,580

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Solution

The third proportional to 54,912 and 74,580 is: 101,292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,912 : 74,580 = 74,580 : x
  2. Step 2: Convert to fraction form
    54,912/74,580 = 74,580/x
  3. Step 3: Cross multiply
    54,912x = 74,580 × 74,580
  4. Step 4: Simplify right side
    54,912x = 5,562,176,400
  5. Step 5: Solve for x
    x = 5,562,176,400/54,912
  6. Step 6: Final answer
    x = 101,292.55

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.