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Finding the Fourth Proportional to 71,995.82, 107,990.84 and 40,399.14

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Solution

The fourth proportional to 71,995.82, 107,990.84 and 40,399.14 is: 60,597.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,995.82 : 107,990.84 = 40,399.14 : x
  2. Step 2: Convert to fraction form
    71,995.82/107,990.84 = 40,399.14/x
  3. Step 3: Cross multiply
    71,995.82x = 107,990.84 × 40,399.14
  4. Step 4: Simplify right side
    71,995.82x = 4,362,737,063.88
  5. Step 5: Solve for x
    x = 4,362,737,063.88/71,995.82
  6. Step 6: Final answer
    x = 60,597.09

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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.