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Finding the Fourth Proportional to 45,239.13, 67,837.11 and 20,279.37

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Solution

The fourth proportional to 45,239.13, 67,837.11 and 20,279.37 is: 30,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,239.13 : 67,837.11 = 20,279.37 : x
  2. Step 2: Convert to fraction form
    45,239.13/67,837.11 = 20,279.37/x
  3. Step 3: Cross multiply
    45,239.13x = 67,837.11 × 20,279.37
  4. Step 4: Simplify right side
    45,239.13x = 1,375,693,853.42
  5. Step 5: Solve for x
    x = 1,375,693,853.42/45,239.13
  6. Step 6: Final answer
    x = 30,409.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.