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Finding the Third Proportional to 45,348 and 70,390

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Solution

The third proportional to 45,348 and 70,390 is: 109,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348 : 70,390 = 70,390 : x
  2. Step 2: Convert to fraction form
    45,348/70,390 = 70,390/x
  3. Step 3: Cross multiply
    45,348x = 70,390 × 70,390
  4. Step 4: Simplify right side
    45,348x = 4,954,752,100
  5. Step 5: Solve for x
    x = 4,954,752,100/45,348
  6. Step 6: Final answer
    x = 109,260.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.