Home / 71,511,516.12-107,268,258.24-20,393,540.40

Finding the Fourth Proportional to 71,511,516.12, 107,268,258.24 and 20,393,540.40

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Solution

The fourth proportional to 71,511,516.12, 107,268,258.24 and 20,393,540.40 is: 30,590,591.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511,516.12 : 107,268,258.24 = 20,393,540.40 : x
  2. Step 2: Convert to fraction form
    71,511,516.12/107,268,258.24 = 20,393,540.40/x
  3. Step 3: Cross multiply
    71,511,516.12x = 107,268,258.24 × 20,393,540.40
  4. Step 4: Simplify right side
    71,511,516.12x = 2,187,579,558,055,072.75
  5. Step 5: Solve for x
    x = 2,187,579,558,055,072.75/71,511,516.12
  6. Step 6: Final answer
    x = 30,590,591.23

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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.