Home / 90,286.64-135,453-57,241.52

Finding the Fourth Proportional to 90,286.64, 135,453 and 57,241.52

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Solution

The fourth proportional to 90,286.64, 135,453 and 57,241.52 is: 85,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,286.64 : 135,453 = 57,241.52 : x
  2. Step 2: Convert to fraction form
    90,286.64/135,453 = 57,241.52/x
  3. Step 3: Cross multiply
    90,286.64x = 135,453 × 57,241.52
  4. Step 4: Simplify right side
    90,286.64x = 7,753,535,608.56
  5. Step 5: Solve for x
    x = 7,753,535,608.56/90,286.64
  6. Step 6: Final answer
    x = 85,876.89

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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.