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Finding the Third Proportional to 45,419 and 67,480

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Solution

The third proportional to 45,419 and 67,480 is: 100,256.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,419 : 67,480 = 67,480 : x
  2. Step 2: Convert to fraction form
    45,419/67,480 = 67,480/x
  3. Step 3: Cross multiply
    45,419x = 67,480 × 67,480
  4. Step 4: Simplify right side
    45,419x = 4,553,550,400
  5. Step 5: Solve for x
    x = 4,553,550,400/45,419
  6. Step 6: Final answer
    x = 100,256.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.