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Finding the Third Proportional to 28,691 and 61,776

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Solution

The third proportional to 28,691 and 61,776 is: 133,012.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691 : 61,776 = 61,776 : x
  2. Step 2: Convert to fraction form
    28,691/61,776 = 61,776/x
  3. Step 3: Cross multiply
    28,691x = 61,776 × 61,776
  4. Step 4: Simplify right side
    28,691x = 3,816,274,176
  5. Step 5: Solve for x
    x = 3,816,274,176/28,691
  6. Step 6: Final answer
    x = 133,012.94

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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.