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Finding the Third Proportional to 28,974 and 45,189

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Solution

The third proportional to 28,974 and 45,189 is: 70,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,974 : 45,189 = 45,189 : x
  2. Step 2: Convert to fraction form
    28,974/45,189 = 45,189/x
  3. Step 3: Cross multiply
    28,974x = 45,189 × 45,189
  4. Step 4: Simplify right side
    28,974x = 2,042,045,721
  5. Step 5: Solve for x
    x = 2,042,045,721/28,974
  6. Step 6: Final answer
    x = 70,478.56

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.