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Finding the Fourth Proportional to 43,455.44, 65,160.12 and 18,818

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Solution

The fourth proportional to 43,455.44, 65,160.12 and 18,818 is: 28,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,455.44 : 65,160.12 = 18,818 : x
  2. Step 2: Convert to fraction form
    43,455.44/65,160.12 = 18,818/x
  3. Step 3: Cross multiply
    43,455.44x = 65,160.12 × 18,818
  4. Step 4: Simplify right side
    43,455.44x = 1,226,183,138.16
  5. Step 5: Solve for x
    x = 1,226,183,138.16/43,455.44
  6. Step 6: Final answer
    x = 28,217.02

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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.