Home / 50,067.28-75,128.59-20,505.86

Finding the Fourth Proportional to 50,067.28, 75,128.59 and 20,505.86

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Solution

The fourth proportional to 50,067.28, 75,128.59 and 20,505.86 is: 30,770.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,067.28 : 75,128.59 = 20,505.86 : x
  2. Step 2: Convert to fraction form
    50,067.28/75,128.59 = 20,505.86/x
  3. Step 3: Cross multiply
    50,067.28x = 75,128.59 × 20,505.86
  4. Step 4: Simplify right side
    50,067.28x = 1,540,575,972.89
  5. Step 5: Solve for x
    x = 1,540,575,972.89/50,067.28
  6. Step 6: Final answer
    x = 30,770.12

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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.