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Finding the Fourth Proportional to 90,604.56, 135,864.15 and 33,639

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Solution

The fourth proportional to 90,604.56, 135,864.15 and 33,639 is: 50,442.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,604.56 : 135,864.15 = 33,639 : x
  2. Step 2: Convert to fraction form
    90,604.56/135,864.15 = 33,639/x
  3. Step 3: Cross multiply
    90,604.56x = 135,864.15 × 33,639
  4. Step 4: Simplify right side
    90,604.56x = 4,570,334,141.85
  5. Step 5: Solve for x
    x = 4,570,334,141.85/90,604.56
  6. Step 6: Final answer
    x = 50,442.65

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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.