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Finding the Fourth Proportional to 90,662.57, 135,993.83 and 28,333.07

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Solution

The fourth proportional to 90,662.57, 135,993.83 and 28,333.07 is: 42,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,662.57 : 135,993.83 = 28,333.07 : x
  2. Step 2: Convert to fraction form
    90,662.57/135,993.83 = 28,333.07/x
  3. Step 3: Cross multiply
    90,662.57x = 135,993.83 × 28,333.07
  4. Step 4: Simplify right side
    90,662.57x = 3,853,122,704.96
  5. Step 5: Solve for x
    x = 3,853,122,704.96/90,662.57
  6. Step 6: Final answer
    x = 42,499.60

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Similar ratio
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1.5x scale

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.