Home / 71,511,513.84-107,268,254.90-20,393,538.12

Finding the Fourth Proportional to 71,511,513.84, 107,268,254.90 and 20,393,538.12

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Solution

The fourth proportional to 71,511,513.84, 107,268,254.90 and 20,393,538.12 is: 30,590,587.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,511,513.84 : 107,268,254.90 = 20,393,538.12 : x
  2. Step 2: Convert to fraction form
    71,511,513.84/107,268,254.90 = 20,393,538.12/x
  3. Step 3: Cross multiply
    71,511,513.84x = 107,268,254.90 × 20,393,538.12
  4. Step 4: Simplify right side
    71,511,513.84x = 2,187,579,245,267,059
  5. Step 5: Solve for x
    x = 2,187,579,245,267,059/71,511,513.84
  6. Step 6: Final answer
    x = 30,590,587.83

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1.5x scale

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.