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Finding the Fourth Proportional to 90,612.83, 135,940.52 and 27,433.44

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Solution

The fourth proportional to 90,612.83, 135,940.52 and 27,433.44 is: 41,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,612.83 : 135,940.52 = 27,433.44 : x
  2. Step 2: Convert to fraction form
    90,612.83/135,940.52 = 27,433.44/x
  3. Step 3: Cross multiply
    90,612.83x = 135,940.52 × 27,433.44
  4. Step 4: Simplify right side
    90,612.83x = 3,729,315,961.82
  5. Step 5: Solve for x
    x = 3,729,315,961.82/90,612.83
  6. Step 6: Final answer
    x = 41,156.60

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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.