Home / 72,311,961.70-108,468,825.45-21,195,014.68

Finding the Fourth Proportional to 72,311,961.70, 108,468,825.45 and 21,195,014.68

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Solution

The fourth proportional to 72,311,961.70, 108,468,825.45 and 21,195,014.68 is: 31,792,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,311,961.70 : 108,468,825.45 = 21,195,014.68 : x
  2. Step 2: Convert to fraction form
    72,311,961.70/108,468,825.45 = 21,195,014.68/x
  3. Step 3: Cross multiply
    72,311,961.70x = 108,468,825.45 × 21,195,014.68
  4. Step 4: Simplify right side
    72,311,961.70x = 2,298,998,347,735,107.50
  5. Step 5: Solve for x
    x = 2,298,998,347,735,107.50/72,311,961.70
  6. Step 6: Final answer
    x = 31,792,780.80

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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.