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Finding the Fourth Proportional to 66,837, 100,255.50 and 20,089.92

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Solution

The fourth proportional to 66,837, 100,255.50 and 20,089.92 is: 30,134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,837 : 100,255.50 = 20,089.92 : x
  2. Step 2: Convert to fraction form
    66,837/100,255.50 = 20,089.92/x
  3. Step 3: Cross multiply
    66,837x = 100,255.50 × 20,089.92
  4. Step 4: Simplify right side
    66,837x = 2,014,124,974.56
  5. Step 5: Solve for x
    x = 2,014,124,974.56/66,837
  6. Step 6: Final answer
    x = 30,134.88

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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.