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Finding the Third Proportional to 28,189 and 60,739

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Solution

The third proportional to 28,189 and 60,739 is: 130,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189 : 60,739 = 60,739 : x
  2. Step 2: Convert to fraction form
    28,189/60,739 = 60,739/x
  3. Step 3: Cross multiply
    28,189x = 60,739 × 60,739
  4. Step 4: Simplify right side
    28,189x = 3,689,226,121
  5. Step 5: Solve for x
    x = 3,689,226,121/28,189
  6. Step 6: Final answer
    x = 130,874.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.