Home / 72,740,680.70-100,380,716.71-39,701,166.73

Finding the Fourth Proportional to 72,740,680.70, 100,380,716.71 and 39,701,166.73

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Solution

The fourth proportional to 72,740,680.70, 100,380,716.71 and 39,701,166.73 is: 54,786,833.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,740,680.70 : 100,380,716.71 = 39,701,166.73 : x
  2. Step 2: Convert to fraction form
    72,740,680.70/100,380,716.71 = 39,701,166.73/x
  3. Step 3: Cross multiply
    72,740,680.70x = 100,380,716.71 × 39,701,166.73
  4. Step 4: Simplify right side
    72,740,680.70x = 3,985,231,570,230,402
  5. Step 5: Solve for x
    x = 3,985,231,570,230,402/72,740,680.70
  6. Step 6: Final answer
    x = 54,786,833.61

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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.