Home / 31,321,683.51-43,229,121.72-18,268,942.42

Finding the Fourth Proportional to 31,321,683.51, 43,229,121.72 and 18,268,942.42

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Solution

The fourth proportional to 31,321,683.51, 43,229,121.72 and 18,268,942.42 is: 25,214,172.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,321,683.51 : 43,229,121.72 = 18,268,942.42 : x
  2. Step 2: Convert to fraction form
    31,321,683.51/43,229,121.72 = 18,268,942.42/x
  3. Step 3: Cross multiply
    31,321,683.51x = 43,229,121.72 × 18,268,942.42
  4. Step 4: Simplify right side
    31,321,683.51x = 789,750,335,478,506.75
  5. Step 5: Solve for x
    x = 789,750,335,478,506.75/31,321,683.51
  6. Step 6: Final answer
    x = 25,214,172.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.