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Finding the Fourth Proportional to 40,991.38, 61,484.64 and 11,413.42

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Solution

The fourth proportional to 40,991.38, 61,484.64 and 11,413.42 is: 17,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,991.38 : 61,484.64 = 11,413.42 : x
  2. Step 2: Convert to fraction form
    40,991.38/61,484.64 = 11,413.42/x
  3. Step 3: Cross multiply
    40,991.38x = 61,484.64 × 11,413.42
  4. Step 4: Simplify right side
    40,991.38x = 701,750,019.87
  5. Step 5: Solve for x
    x = 701,750,019.87/40,991.38
  6. Step 6: Final answer
    x = 17,119.45

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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.