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Finding the Third Proportional to 28,170 and 61,205

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Solution

The third proportional to 28,170 and 61,205 is: 132,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170 : 61,205 = 61,205 : x
  2. Step 2: Convert to fraction form
    28,170/61,205 = 61,205/x
  3. Step 3: Cross multiply
    28,170x = 61,205 × 61,205
  4. Step 4: Simplify right side
    28,170x = 3,746,052,025
  5. Step 5: Solve for x
    x = 3,746,052,025/28,170
  6. Step 6: Final answer
    x = 132,980.19

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.