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Finding the Fourth Proportional to 43,879.55, 65,809.13 and 12,291.83

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Solution

The fourth proportional to 43,879.55, 65,809.13 and 12,291.83 is: 18,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,879.55 : 65,809.13 = 12,291.83 : x
  2. Step 2: Convert to fraction form
    43,879.55/65,809.13 = 12,291.83/x
  3. Step 3: Cross multiply
    43,879.55x = 65,809.13 × 12,291.83
  4. Step 4: Simplify right side
    43,879.55x = 808,914,413.31
  5. Step 5: Solve for x
    x = 808,914,413.31/43,879.55
  6. Step 6: Final answer
    x = 18,434.88

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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.