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Finding the Fourth Proportional to 66,988.33, 100,388.67 and 50,337.75

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Solution

The fourth proportional to 66,988.33, 100,388.67 and 50,337.75 is: 75,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988.33 : 100,388.67 = 50,337.75 : x
  2. Step 2: Convert to fraction form
    66,988.33/100,388.67 = 50,337.75/x
  3. Step 3: Cross multiply
    66,988.33x = 100,388.67 × 50,337.75
  4. Step 4: Simplify right side
    66,988.33x = 5,053,339,773.29
  5. Step 5: Solve for x
    x = 5,053,339,773.29/66,988.33
  6. Step 6: Final answer
    x = 75,436.12

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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.