Home / 90,634.40-135,732.83-54,506.96

Finding the Fourth Proportional to 90,634.40, 135,732.83 and 54,506.96

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Solution

The fourth proportional to 90,634.40, 135,732.83 and 54,506.96 is: 81,628.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634.40 : 135,732.83 = 54,506.96 : x
  2. Step 2: Convert to fraction form
    90,634.40/135,732.83 = 54,506.96/x
  3. Step 3: Cross multiply
    90,634.40x = 135,732.83 × 54,506.96
  4. Step 4: Simplify right side
    90,634.40x = 7,398,383,935.50
  5. Step 5: Solve for x
    x = 7,398,383,935.50/90,634.40
  6. Step 6: Final answer
    x = 81,628.87

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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.