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Finding the Third Proportional to 28,380 and 61,672

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Solution

The third proportional to 28,380 and 61,672 is: 134,018.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380 : 61,672 = 61,672 : x
  2. Step 2: Convert to fraction form
    28,380/61,672 = 61,672/x
  3. Step 3: Cross multiply
    28,380x = 61,672 × 61,672
  4. Step 4: Simplify right side
    28,380x = 3,803,435,584
  5. Step 5: Solve for x
    x = 3,803,435,584/28,380
  6. Step 6: Final answer
    x = 134,018.17

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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.