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Finding the Third Proportional to 50,712 and 78,832

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Solution

The third proportional to 50,712 and 78,832 is: 122,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,712 : 78,832 = 78,832 : x
  2. Step 2: Convert to fraction form
    50,712/78,832 = 78,832/x
  3. Step 3: Cross multiply
    50,712x = 78,832 × 78,832
  4. Step 4: Simplify right side
    50,712x = 6,214,484,224
  5. Step 5: Solve for x
    x = 6,214,484,224/50,712
  6. Step 6: Final answer
    x = 122,544.65

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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.