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Finding the Fourth Proportional to 50,942.80, 76,414.20 and 40,445.20

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Solution

The fourth proportional to 50,942.80, 76,414.20 and 40,445.20 is: 60,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,942.80 : 76,414.20 = 40,445.20 : x
  2. Step 2: Convert to fraction form
    50,942.80/76,414.20 = 40,445.20/x
  3. Step 3: Cross multiply
    50,942.80x = 76,414.20 × 40,445.20
  4. Step 4: Simplify right side
    50,942.80x = 3,090,587,601.84
  5. Step 5: Solve for x
    x = 3,090,587,601.84/50,942.80
  6. Step 6: Final answer
    x = 60,667.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.