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Finding the Third Proportional to 34,456 and 74,420

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Solution

The third proportional to 34,456 and 74,420 is: 160,736.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,456 : 74,420 = 74,420 : x
  2. Step 2: Convert to fraction form
    34,456/74,420 = 74,420/x
  3. Step 3: Cross multiply
    34,456x = 74,420 × 74,420
  4. Step 4: Simplify right side
    34,456x = 5,538,336,400
  5. Step 5: Solve for x
    x = 5,538,336,400/34,456
  6. Step 6: Final answer
    x = 160,736.49

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.