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Finding the Fourth Proportional to 91,183.21, 125,853.83 and 53,469.61

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Solution

The fourth proportional to 91,183.21, 125,853.83 and 53,469.61 is: 73,800.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,183.21 : 125,853.83 = 53,469.61 : x
  2. Step 2: Convert to fraction form
    91,183.21/125,853.83 = 53,469.61/x
  3. Step 3: Cross multiply
    91,183.21x = 125,853.83 × 53,469.61
  4. Step 4: Simplify right side
    91,183.21x = 6,729,355,207.11
  5. Step 5: Solve for x
    x = 6,729,355,207.11/91,183.21
  6. Step 6: Final answer
    x = 73,800.38

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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.