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Finding the Fourth Proportional to 90,396.63, 135,581.86 and 63,296.75

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Solution

The fourth proportional to 90,396.63, 135,581.86 and 63,296.75 is: 94,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,396.63 : 135,581.86 = 63,296.75 : x
  2. Step 2: Convert to fraction form
    90,396.63/135,581.86 = 63,296.75/x
  3. Step 3: Cross multiply
    90,396.63x = 135,581.86 × 63,296.75
  4. Step 4: Simplify right side
    90,396.63x = 8,581,891,515.03
  5. Step 5: Solve for x
    x = 8,581,891,515.03/90,396.63
  6. Step 6: Final answer
    x = 94,935.97

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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.