Home / 90,789.14-136,183.72-28,464.50

Finding the Fourth Proportional to 90,789.14, 136,183.72 and 28,464.50

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Solution

The fourth proportional to 90,789.14, 136,183.72 and 28,464.50 is: 42,696.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,789.14 : 136,183.72 = 28,464.50 : x
  2. Step 2: Convert to fraction form
    90,789.14/136,183.72 = 28,464.50/x
  3. Step 3: Cross multiply
    90,789.14x = 136,183.72 × 28,464.50
  4. Step 4: Simplify right side
    90,789.14x = 3,876,401,497.94
  5. Step 5: Solve for x
    x = 3,876,401,497.94/90,789.14
  6. Step 6: Final answer
    x = 42,696.75

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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.