Home / 71,511,513.08-107,268,253.79-20,393,537.36

Finding the Fourth Proportional to 71,511,513.08, 107,268,253.79 and 20,393,537.36

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Solution

The fourth proportional to 71,511,513.08, 107,268,253.79 and 20,393,537.36 is: 30,590,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511,513.08 : 107,268,253.79 = 20,393,537.36 : x
  2. Step 2: Convert to fraction form
    71,511,513.08/107,268,253.79 = 20,393,537.36/x
  3. Step 3: Cross multiply
    71,511,513.08x = 107,268,253.79 × 20,393,537.36
  4. Step 4: Simplify right side
    71,511,513.08x = 2,187,579,140,570,017.50
  5. Step 5: Solve for x
    x = 2,187,579,140,570,017.50/71,511,513.08
  6. Step 6: Final answer
    x = 30,590,586.70

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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.