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Finding the Fourth Proportional to 50,243.76, 75,365.52 and 20,640.72

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Solution

The fourth proportional to 50,243.76, 75,365.52 and 20,640.72 is: 30,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,243.76 : 75,365.52 = 20,640.72 : x
  2. Step 2: Convert to fraction form
    50,243.76/75,365.52 = 20,640.72/x
  3. Step 3: Cross multiply
    50,243.76x = 75,365.52 × 20,640.72
  4. Step 4: Simplify right side
    50,243.76x = 1,555,598,595.97
  5. Step 5: Solve for x
    x = 1,555,598,595.97/50,243.76
  6. Step 6: Final answer
    x = 30,961.03

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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.