Home / 81,404.12-122,007.75-41,939.70

Finding the Fourth Proportional to 81,404.12, 122,007.75 and 41,939.70

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Solution

The fourth proportional to 81,404.12, 122,007.75 and 41,939.70 is: 62,858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404.12 : 122,007.75 = 41,939.70 : x
  2. Step 2: Convert to fraction form
    81,404.12/122,007.75 = 41,939.70/x
  3. Step 3: Cross multiply
    81,404.12x = 122,007.75 × 41,939.70
  4. Step 4: Simplify right side
    81,404.12x = 5,116,968,432.68
  5. Step 5: Solve for x
    x = 5,116,968,432.68/81,404.12
  6. Step 6: Final answer
    x = 62,858.84

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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.