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Finding the Third Proportional to 51,057 and 76,278

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Solution

The third proportional to 51,057 and 76,278 is: 113,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,057 : 76,278 = 76,278 : x
  2. Step 2: Convert to fraction form
    51,057/76,278 = 76,278/x
  3. Step 3: Cross multiply
    51,057x = 76,278 × 76,278
  4. Step 4: Simplify right side
    51,057x = 5,818,333,284
  5. Step 5: Solve for x
    x = 5,818,333,284/51,057
  6. Step 6: Final answer
    x = 113,957.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.