Home / 90,650.21-135,928.61-40,687.49

Finding the Fourth Proportional to 90,650.21, 135,928.61 and 40,687.49

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Solution

The fourth proportional to 90,650.21, 135,928.61 and 40,687.49 is: 61,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,650.21 : 135,928.61 = 40,687.49 : x
  2. Step 2: Convert to fraction form
    90,650.21/135,928.61 = 40,687.49/x
  3. Step 3: Cross multiply
    90,650.21x = 135,928.61 × 40,687.49
  4. Step 4: Simplify right side
    90,650.21x = 5,530,593,892.02
  5. Step 5: Solve for x
    x = 5,530,593,892.02/90,650.21
  6. Step 6: Final answer
    x = 61,010.27

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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.