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Finding the Fourth Proportional to 90,169.89, 135,228.39 and 33,969.45

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Solution

The fourth proportional to 90,169.89, 135,228.39 and 33,969.45 is: 50,944.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,169.89 : 135,228.39 = 33,969.45 : x
  2. Step 2: Convert to fraction form
    90,169.89/135,228.39 = 33,969.45/x
  3. Step 3: Cross multiply
    90,169.89x = 135,228.39 × 33,969.45
  4. Step 4: Simplify right side
    90,169.89x = 4,593,634,032.69
  5. Step 5: Solve for x
    x = 4,593,634,032.69/90,169.89
  6. Step 6: Final answer
    x = 50,944.21

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1.5x scale

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.