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Finding the Fourth Proportional to 90,656.52, 135,891.26 and 65,634.44

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Solution

The fourth proportional to 90,656.52, 135,891.26 and 65,634.44 is: 98,383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,656.52 : 135,891.26 = 65,634.44 : x
  2. Step 2: Convert to fraction form
    90,656.52/135,891.26 = 65,634.44/x
  3. Step 3: Cross multiply
    90,656.52x = 135,891.26 × 65,634.44
  4. Step 4: Simplify right side
    90,656.52x = 8,919,146,750.99
  5. Step 5: Solve for x
    x = 8,919,146,750.99/90,656.52
  6. Step 6: Final answer
    x = 98,383.95

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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.