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Finding the Fourth Proportional to 72,162.45, 108,245.52 and 34,202.85

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Solution

The fourth proportional to 72,162.45, 108,245.52 and 34,202.85 is: 51,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,162.45 : 108,245.52 = 34,202.85 : x
  2. Step 2: Convert to fraction form
    72,162.45/108,245.52 = 34,202.85/x
  3. Step 3: Cross multiply
    72,162.45x = 108,245.52 × 34,202.85
  4. Step 4: Simplify right side
    72,162.45x = 3,702,305,283.73
  5. Step 5: Solve for x
    x = 3,702,305,283.73/72,162.45
  6. Step 6: Final answer
    x = 51,305.15

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1.5x scale

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.