Home / 90,619.40-135,864.30-40,658.60

Finding the Fourth Proportional to 90,619.40, 135,864.30 and 40,658.60

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Solution

The fourth proportional to 90,619.40, 135,864.30 and 40,658.60 is: 60,958.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,619.40 : 135,864.30 = 40,658.60 : x
  2. Step 2: Convert to fraction form
    90,619.40/135,864.30 = 40,658.60/x
  3. Step 3: Cross multiply
    90,619.40x = 135,864.30 × 40,658.60
  4. Step 4: Simplify right side
    90,619.40x = 5,524,052,227.98
  5. Step 5: Solve for x
    x = 5,524,052,227.98/90,619.40
  6. Step 6: Final answer
    x = 60,958.83

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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.