Home / 72,072.50-108,081.21-34,621.90

Finding the Fourth Proportional to 72,072.50, 108,081.21 and 34,621.90

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Solution

The fourth proportional to 72,072.50, 108,081.21 and 34,621.90 is: 51,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,072.50 : 108,081.21 = 34,621.90 : x
  2. Step 2: Convert to fraction form
    72,072.50/108,081.21 = 34,621.90/x
  3. Step 3: Cross multiply
    72,072.50x = 108,081.21 × 34,621.90
  4. Step 4: Simplify right side
    72,072.50x = 3,741,976,844.50
  5. Step 5: Solve for x
    x = 3,741,976,844.50/72,072.50
  6. Step 6: Final answer
    x = 51,919.62

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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.