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Finding the Fourth Proportional to 90,399.69, 135,624.92 and 33,472.74

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Solution

The fourth proportional to 90,399.69, 135,624.92 and 33,472.74 is: 50,218.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,399.69 : 135,624.92 = 33,472.74 : x
  2. Step 2: Convert to fraction form
    90,399.69/135,624.92 = 33,472.74/x
  3. Step 3: Cross multiply
    90,399.69x = 135,624.92 × 33,472.74
  4. Step 4: Simplify right side
    90,399.69x = 4,539,737,517.32
  5. Step 5: Solve for x
    x = 4,539,737,517.32/90,399.69
  6. Step 6: Final answer
    x = 50,218.51

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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.