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Finding the Fourth Proportional to 43,967.53, 65,944.05 and 12,379.78

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Solution

The fourth proportional to 43,967.53, 65,944.05 and 12,379.78 is: 18,567.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,967.53 : 65,944.05 = 12,379.78 : x
  2. Step 2: Convert to fraction form
    43,967.53/65,944.05 = 12,379.78/x
  3. Step 3: Cross multiply
    43,967.53x = 65,944.05 × 12,379.78
  4. Step 4: Simplify right side
    43,967.53x = 816,372,831.31
  5. Step 5: Solve for x
    x = 816,372,831.31/43,967.53
  6. Step 6: Final answer
    x = 18,567.63

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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.