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Finding the Fourth Proportional to 73,211.03, 109,843.87 and 28,868.69

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Solution

The fourth proportional to 73,211.03, 109,843.87 and 28,868.69 is: 43,313.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,211.03 : 109,843.87 = 28,868.69 : x
  2. Step 2: Convert to fraction form
    73,211.03/109,843.87 = 28,868.69/x
  3. Step 3: Cross multiply
    73,211.03x = 109,843.87 × 28,868.69
  4. Step 4: Simplify right side
    73,211.03x = 3,171,048,631.43
  5. Step 5: Solve for x
    x = 3,171,048,631.43/73,211.03
  6. Step 6: Final answer
    x = 43,313.81

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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.