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Finding the Fourth Proportional to 90,311.40, 124,624.80 and 50,022

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Solution

The fourth proportional to 90,311.40, 124,624.80 and 50,022 is: 69,027.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,311.40 : 124,624.80 = 50,022 : x
  2. Step 2: Convert to fraction form
    90,311.40/124,624.80 = 50,022/x
  3. Step 3: Cross multiply
    90,311.40x = 124,624.80 × 50,022
  4. Step 4: Simplify right side
    90,311.40x = 6,233,981,745.60
  5. Step 5: Solve for x
    x = 6,233,981,745.60/90,311.40
  6. Step 6: Final answer
    x = 69,027.63

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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.