Home / 81,905,930.42-122,859,231.87-20,494,922.18

Finding the Fourth Proportional to 81,905,930.42, 122,859,231.87 and 20,494,922.18

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Solution

The fourth proportional to 81,905,930.42, 122,859,231.87 and 20,494,922.18 is: 30,742,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905,930.42 : 122,859,231.87 = 20,494,922.18 : x
  2. Step 2: Convert to fraction form
    81,905,930.42/122,859,231.87 = 20,494,922.18/x
  3. Step 3: Cross multiply
    81,905,930.42x = 122,859,231.87 × 20,494,922.18
  4. Step 4: Simplify right side
    81,905,930.42x = 2,517,990,396,270,226
  5. Step 5: Solve for x
    x = 2,517,990,396,270,226/81,905,930.42
  6. Step 6: Final answer
    x = 30,742,467.41

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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.