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Finding the Fourth Proportional to 49,099.78, 73,648.86 and 12,163.78

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Solution

The fourth proportional to 49,099.78, 73,648.86 and 12,163.78 is: 18,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,099.78 : 73,648.86 = 12,163.78 : x
  2. Step 2: Convert to fraction form
    49,099.78/73,648.86 = 12,163.78/x
  3. Step 3: Cross multiply
    49,099.78x = 73,648.86 × 12,163.78
  4. Step 4: Simplify right side
    49,099.78x = 895,848,530.29
  5. Step 5: Solve for x
    x = 895,848,530.29/49,099.78
  6. Step 6: Final answer
    x = 18,245.47

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1.5x scale

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.