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Finding the Fourth Proportional to 89,697.97, 134,286.31 and 52,143.54

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Solution

The fourth proportional to 89,697.97, 134,286.31 and 52,143.54 is: 78,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,697.97 : 134,286.31 = 52,143.54 : x
  2. Step 2: Convert to fraction form
    89,697.97/134,286.31 = 52,143.54/x
  3. Step 3: Cross multiply
    89,697.97x = 134,286.31 × 52,143.54
  4. Step 4: Simplify right side
    89,697.97x = 7,002,163,576.94
  5. Step 5: Solve for x
    x = 7,002,163,576.94/89,697.97
  6. Step 6: Final answer
    x = 78,063.79

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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.