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Finding the Third Proportional to 50,205.50 and 77,739

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Solution

The third proportional to 50,205.50 and 77,739 is: 120,372.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,205.50 : 77,739 = 77,739 : x
  2. Step 2: Convert to fraction form
    50,205.50/77,739 = 77,739/x
  3. Step 3: Cross multiply
    50,205.50x = 77,739 × 77,739
  4. Step 4: Simplify right side
    50,205.50x = 6,043,352,121
  5. Step 5: Solve for x
    x = 6,043,352,121/50,205.50
  6. Step 6: Final answer
    x = 120,372.31

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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.