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Finding the Fourth Proportional to 90,554.52, 135,813.81 and 45,563.88

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Solution

The fourth proportional to 90,554.52, 135,813.81 and 45,563.88 is: 68,336.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,554.52 : 135,813.81 = 45,563.88 : x
  2. Step 2: Convert to fraction form
    90,554.52/135,813.81 = 45,563.88/x
  3. Step 3: Cross multiply
    90,554.52x = 135,813.81 × 45,563.88
  4. Step 4: Simplify right side
    90,554.52x = 6,188,204,141.18
  5. Step 5: Solve for x
    x = 6,188,204,141.18/90,554.52
  6. Step 6: Final answer
    x = 68,336.78

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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.