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Finding the Fourth Proportional to 36,893.79, 50,912.31 and 20,762

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Solution

The fourth proportional to 36,893.79, 50,912.31 and 20,762 is: 28,650.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,893.79 : 50,912.31 = 20,762 : x
  2. Step 2: Convert to fraction form
    36,893.79/50,912.31 = 20,762/x
  3. Step 3: Cross multiply
    36,893.79x = 50,912.31 × 20,762
  4. Step 4: Simplify right side
    36,893.79x = 1,057,041,380.22
  5. Step 5: Solve for x
    x = 1,057,041,380.22/36,893.79
  6. Step 6: Final answer
    x = 28,650.93

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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.