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Finding the Third Proportional to 50,875 and 78,868

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Solution

The third proportional to 50,875 and 78,868 is: 122,263.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,875 : 78,868 = 78,868 : x
  2. Step 2: Convert to fraction form
    50,875/78,868 = 78,868/x
  3. Step 3: Cross multiply
    50,875x = 78,868 × 78,868
  4. Step 4: Simplify right side
    50,875x = 6,220,161,424
  5. Step 5: Solve for x
    x = 6,220,161,424/50,875
  6. Step 6: Final answer
    x = 122,263.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.