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Finding the Fourth Proportional to 43,684.62, 65,472.20 and 18,695.41

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Solution

The fourth proportional to 43,684.62, 65,472.20 and 18,695.41 is: 28,019.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,684.62 : 65,472.20 = 18,695.41 : x
  2. Step 2: Convert to fraction form
    43,684.62/65,472.20 = 18,695.41/x
  3. Step 3: Cross multiply
    43,684.62x = 65,472.20 × 18,695.41
  4. Step 4: Simplify right side
    43,684.62x = 1,224,029,435.55
  5. Step 5: Solve for x
    x = 1,224,029,435.55/43,684.62
  6. Step 6: Final answer
    x = 28,019.69

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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.