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Finding the Third Proportional to 51,402 and 77,104

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Solution

The third proportional to 51,402 and 77,104 is: 115,657.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,402 : 77,104 = 77,104 : x
  2. Step 2: Convert to fraction form
    51,402/77,104 = 77,104/x
  3. Step 3: Cross multiply
    51,402x = 77,104 × 77,104
  4. Step 4: Simplify right side
    51,402x = 5,945,026,816
  5. Step 5: Solve for x
    x = 5,945,026,816/51,402
  6. Step 6: Final answer
    x = 115,657.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.