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Finding the Fourth Proportional to 66,212.98, 91,375.09 and 35,998.97

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Solution

The fourth proportional to 66,212.98, 91,375.09 and 35,998.97 is: 49,679.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,212.98 : 91,375.09 = 35,998.97 : x
  2. Step 2: Convert to fraction form
    66,212.98/91,375.09 = 35,998.97/x
  3. Step 3: Cross multiply
    66,212.98x = 91,375.09 × 35,998.97
  4. Step 4: Simplify right side
    66,212.98x = 3,289,408,576.78
  5. Step 5: Solve for x
    x = 3,289,408,576.78/66,212.98
  6. Step 6: Final answer
    x = 49,679.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.