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Finding the Fourth Proportional to 51,379.20, 76,939.20 and 41,011.20

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Solution

The fourth proportional to 51,379.20, 76,939.20 and 41,011.20 is: 61,413.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,379.20 : 76,939.20 = 41,011.20 : x
  2. Step 2: Convert to fraction form
    51,379.20/76,939.20 = 41,011.20/x
  3. Step 3: Cross multiply
    51,379.20x = 76,939.20 × 41,011.20
  4. Step 4: Simplify right side
    51,379.20x = 3,155,368,919.04
  5. Step 5: Solve for x
    x = 3,155,368,919.04/51,379.20
  6. Step 6: Final answer
    x = 61,413.35

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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.