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Finding the Third Proportional to 28,620 and 61,578

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Solution

The third proportional to 28,620 and 61,578 is: 132,489.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620 : 61,578 = 61,578 : x
  2. Step 2: Convert to fraction form
    28,620/61,578 = 61,578/x
  3. Step 3: Cross multiply
    28,620x = 61,578 × 61,578
  4. Step 4: Simplify right side
    28,620x = 3,791,850,084
  5. Step 5: Solve for x
    x = 3,791,850,084/28,620
  6. Step 6: Final answer
    x = 132,489.52

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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.