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Finding the Fourth Proportional to 99,483.52, 149,286.72 and 40,319.68

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Solution

The fourth proportional to 99,483.52, 149,286.72 and 40,319.68 is: 60,504.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,483.52 : 149,286.72 = 40,319.68 : x
  2. Step 2: Convert to fraction form
    99,483.52/149,286.72 = 40,319.68/x
  3. Step 3: Cross multiply
    99,483.52x = 149,286.72 × 40,319.68
  4. Step 4: Simplify right side
    99,483.52x = 6,019,192,778.65
  5. Step 5: Solve for x
    x = 6,019,192,778.65/99,483.52
  6. Step 6: Final answer
    x = 60,504.42

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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.