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Finding the Fourth Proportional to 43,919.04, 65,879.10 and 12,327.30

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Solution

The fourth proportional to 43,919.04, 65,879.10 and 12,327.30 is: 18,491.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,919.04 : 65,879.10 = 12,327.30 : x
  2. Step 2: Convert to fraction form
    43,919.04/65,879.10 = 12,327.30/x
  3. Step 3: Cross multiply
    43,919.04x = 65,879.10 × 12,327.30
  4. Step 4: Simplify right side
    43,919.04x = 812,111,429.43
  5. Step 5: Solve for x
    x = 812,111,429.43/43,919.04
  6. Step 6: Final answer
    x = 18,491.10

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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.