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Finding the Fourth Proportional to 71,998.93, 107,991.10 and 19,413.73

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Solution

The fourth proportional to 71,998.93, 107,991.10 and 19,413.73 is: 29,118.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,998.93 : 107,991.10 = 19,413.73 : x
  2. Step 2: Convert to fraction form
    71,998.93/107,991.10 = 19,413.73/x
  3. Step 3: Cross multiply
    71,998.93x = 107,991.10 × 19,413.73
  4. Step 4: Simplify right side
    71,998.93x = 2,096,510,057.80
  5. Step 5: Solve for x
    x = 2,096,510,057.80/71,998.93
  6. Step 6: Final answer
    x = 29,118.63

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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.