Home / 72,764.28-109,151.28-20,169.36

Finding the Fourth Proportional to 72,764.28, 109,151.28 and 20,169.36

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Solution

The fourth proportional to 72,764.28, 109,151.28 and 20,169.36 is: 30,255.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,764.28 : 109,151.28 = 20,169.36 : x
  2. Step 2: Convert to fraction form
    72,764.28/109,151.28 = 20,169.36/x
  3. Step 3: Cross multiply
    72,764.28x = 109,151.28 × 20,169.36
  4. Step 4: Simplify right side
    72,764.28x = 2,201,511,460.78
  5. Step 5: Solve for x
    x = 2,201,511,460.78/72,764.28
  6. Step 6: Final answer
    x = 30,255.39

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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.