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Finding the Fourth Proportional to 80,219.91, 110,704.79 and 43,920.75

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Solution

The fourth proportional to 80,219.91, 110,704.79 and 43,920.75 is: 60,611.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,219.91 : 110,704.79 = 43,920.75 : x
  2. Step 2: Convert to fraction form
    80,219.91/110,704.79 = 43,920.75/x
  3. Step 3: Cross multiply
    80,219.91x = 110,704.79 × 43,920.75
  4. Step 4: Simplify right side
    80,219.91x = 4,862,237,405.39
  5. Step 5: Solve for x
    x = 4,862,237,405.39/80,219.91
  6. Step 6: Final answer
    x = 60,611.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.