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Finding the Fourth Proportional to 43,380.80, 65,083.44 and 12,216.32

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Solution

The fourth proportional to 43,380.80, 65,083.44 and 12,216.32 is: 18,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,380.80 : 65,083.44 = 12,216.32 : x
  2. Step 2: Convert to fraction form
    43,380.80/65,083.44 = 12,216.32/x
  3. Step 3: Cross multiply
    43,380.80x = 65,083.44 × 12,216.32
  4. Step 4: Simplify right side
    43,380.80x = 795,080,129.74
  5. Step 5: Solve for x
    x = 795,080,129.74/43,380.80
  6. Step 6: Final answer
    x = 18,327.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.