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Finding the Third Proportional to 20,090 and 30,075

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Solution

The third proportional to 20,090 and 30,075 is: 45,022.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090 : 30,075 = 30,075 : x
  2. Step 2: Convert to fraction form
    20,090/30,075 = 30,075/x
  3. Step 3: Cross multiply
    20,090x = 30,075 × 30,075
  4. Step 4: Simplify right side
    20,090x = 904,505,625
  5. Step 5: Solve for x
    x = 904,505,625/20,090
  6. Step 6: Final answer
    x = 45,022.68

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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.