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Finding the Fourth Proportional to 50,684.94, 69,939.11 and 28,020.87

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Solution

The fourth proportional to 50,684.94, 69,939.11 and 28,020.87 is: 38,665.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,684.94 : 69,939.11 = 28,020.87 : x
  2. Step 2: Convert to fraction form
    50,684.94/69,939.11 = 28,020.87/x
  3. Step 3: Cross multiply
    50,684.94x = 69,939.11 × 28,020.87
  4. Step 4: Simplify right side
    50,684.94x = 1,959,754,779.28
  5. Step 5: Solve for x
    x = 1,959,754,779.28/50,684.94
  6. Step 6: Final answer
    x = 38,665.43

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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.