Home / 82,978,601.60-124,467,902.40-54,313,155.20

Finding the Fourth Proportional to 82,978,601.60, 124,467,902.40 and 54,313,155.20

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Solution

The fourth proportional to 82,978,601.60, 124,467,902.40 and 54,313,155.20 is: 81,469,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,978,601.60 : 124,467,902.40 = 54,313,155.20 : x
  2. Step 2: Convert to fraction form
    82,978,601.60/124,467,902.40 = 54,313,155.20/x
  3. Step 3: Cross multiply
    82,978,601.60x = 124,467,902.40 × 54,313,155.20
  4. Step 4: Simplify right side
    82,978,601.60x = 6,760,244,500,469,653
  5. Step 5: Solve for x
    x = 6,760,244,500,469,653/82,978,601.60
  6. Step 6: Final answer
    x = 81,469,732.80

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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.