Home / 81,736.86-122,601.96-28,441.04

Finding the Fourth Proportional to 81,736.86, 122,601.96 and 28,441.04

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Solution

The fourth proportional to 81,736.86, 122,601.96 and 28,441.04 is: 42,660.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,736.86 : 122,601.96 = 28,441.04 : x
  2. Step 2: Convert to fraction form
    81,736.86/122,601.96 = 28,441.04/x
  3. Step 3: Cross multiply
    81,736.86x = 122,601.96 × 28,441.04
  4. Step 4: Simplify right side
    81,736.86x = 3,486,926,635.43
  5. Step 5: Solve for x
    x = 3,486,926,635.43/81,736.86
  6. Step 6: Final answer
    x = 42,660.39

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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.