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Finding the Fourth Proportional to 45,704.80, 68,531.72 and 14,105.90

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Solution

The fourth proportional to 45,704.80, 68,531.72 and 14,105.90 is: 21,150.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,704.80 : 68,531.72 = 14,105.90 : x
  2. Step 2: Convert to fraction form
    45,704.80/68,531.72 = 14,105.90/x
  3. Step 3: Cross multiply
    45,704.80x = 68,531.72 × 14,105.90
  4. Step 4: Simplify right side
    45,704.80x = 966,701,589.15
  5. Step 5: Solve for x
    x = 966,701,589.15/45,704.80
  6. Step 6: Final answer
    x = 21,150.99

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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.