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Finding the Fourth Proportional to 50,135.76, 75,202.11 and 20,531.31

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Solution

The fourth proportional to 50,135.76, 75,202.11 and 20,531.31 is: 30,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,135.76 : 75,202.11 = 20,531.31 : x
  2. Step 2: Convert to fraction form
    50,135.76/75,202.11 = 20,531.31/x
  3. Step 3: Cross multiply
    50,135.76x = 75,202.11 × 20,531.31
  4. Step 4: Simplify right side
    50,135.76x = 1,543,997,551.06
  5. Step 5: Solve for x
    x = 1,543,997,551.06/50,135.76
  6. Step 6: Final answer
    x = 30,796.33

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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.