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Finding the Third Proportional to 51,816.50 and 80,015

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Solution

The third proportional to 51,816.50 and 80,015 is: 123,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,816.50 : 80,015 = 80,015 : x
  2. Step 2: Convert to fraction form
    51,816.50/80,015 = 80,015/x
  3. Step 3: Cross multiply
    51,816.50x = 80,015 × 80,015
  4. Step 4: Simplify right side
    51,816.50x = 6,402,400,225
  5. Step 5: Solve for x
    x = 6,402,400,225/51,816.50
  6. Step 6: Final answer
    x = 123,559.10

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.