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Finding the Fourth Proportional to 50,480.94, 75,737.16 and 20,912.70

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Solution

The fourth proportional to 50,480.94, 75,737.16 and 20,912.70 is: 31,375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,480.94 : 75,737.16 = 20,912.70 : x
  2. Step 2: Convert to fraction form
    50,480.94/75,737.16 = 20,912.70/x
  3. Step 3: Cross multiply
    50,480.94x = 75,737.16 × 20,912.70
  4. Step 4: Simplify right side
    50,480.94x = 1,583,868,505.93
  5. Step 5: Solve for x
    x = 1,583,868,505.93/50,480.94
  6. Step 6: Final answer
    x = 31,375.57

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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.