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Finding the Fourth Proportional to 50,682.56, 69,939.87 and 28,020.11

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Solution

The fourth proportional to 50,682.56, 69,939.87 and 28,020.11 is: 38,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,682.56 : 69,939.87 = 28,020.11 : x
  2. Step 2: Convert to fraction form
    50,682.56/69,939.87 = 28,020.11/x
  3. Step 3: Cross multiply
    50,682.56x = 69,939.87 × 28,020.11
  4. Step 4: Simplify right side
    50,682.56x = 1,959,722,850.79
  5. Step 5: Solve for x
    x = 1,959,722,850.79/50,682.56
  6. Step 6: Final answer
    x = 38,666.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.