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Finding the Fourth Proportional to 69,198.79, 103,798.17 and 49,515.79

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Solution

The fourth proportional to 69,198.79, 103,798.17 and 49,515.79 is: 74,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,198.79 : 103,798.17 = 49,515.79 : x
  2. Step 2: Convert to fraction form
    69,198.79/103,798.17 = 49,515.79/x
  3. Step 3: Cross multiply
    69,198.79x = 103,798.17 × 49,515.79
  4. Step 4: Simplify right side
    69,198.79x = 5,139,648,388.10
  5. Step 5: Solve for x
    x = 5,139,648,388.10/69,198.79
  6. Step 6: Final answer
    x = 74,273.67

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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.