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Finding the Third Proportional to 45,208 and 69,942

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Solution

The third proportional to 45,208 and 69,942 is: 108,208.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,208 : 69,942 = 69,942 : x
  2. Step 2: Convert to fraction form
    45,208/69,942 = 69,942/x
  3. Step 3: Cross multiply
    45,208x = 69,942 × 69,942
  4. Step 4: Simplify right side
    45,208x = 4,891,883,364
  5. Step 5: Solve for x
    x = 4,891,883,364/45,208
  6. Step 6: Final answer
    x = 108,208.36

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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.