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Finding the Third Proportional to 28,858 and 45,109

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Solution

The third proportional to 28,858 and 45,109 is: 70,511.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,858 : 45,109 = 45,109 : x
  2. Step 2: Convert to fraction form
    28,858/45,109 = 45,109/x
  3. Step 3: Cross multiply
    28,858x = 45,109 × 45,109
  4. Step 4: Simplify right side
    28,858x = 2,034,821,881
  5. Step 5: Solve for x
    x = 2,034,821,881/28,858
  6. Step 6: Final answer
    x = 70,511.54

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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.