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Finding the Third Proportional to 28,278 and 62,145

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Solution

The third proportional to 28,278 and 62,145 is: 136,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278 : 62,145 = 62,145 : x
  2. Step 2: Convert to fraction form
    28,278/62,145 = 62,145/x
  3. Step 3: Cross multiply
    28,278x = 62,145 × 62,145
  4. Step 4: Simplify right side
    28,278x = 3,862,001,025
  5. Step 5: Solve for x
    x = 3,862,001,025/28,278
  6. Step 6: Final answer
    x = 136,572.64

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.