Home / 81,394,725.20-122,092,087.80-70,435,230.80

Finding the Fourth Proportional to 81,394,725.20, 122,092,087.80 and 70,435,230.80

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Solution

The fourth proportional to 81,394,725.20, 122,092,087.80 and 70,435,230.80 is: 105,652,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394,725.20 : 122,092,087.80 = 70,435,230.80 : x
  2. Step 2: Convert to fraction form
    81,394,725.20/122,092,087.80 = 70,435,230.80/x
  3. Step 3: Cross multiply
    81,394,725.20x = 122,092,087.80 × 70,435,230.80
  4. Step 4: Simplify right side
    81,394,725.20x = 8,599,584,383,046,864
  5. Step 5: Solve for x
    x = 8,599,584,383,046,864/81,394,725.20
  6. Step 6: Final answer
    x = 105,652,846.20

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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.