Home / 80,878.50-121,183.58-49,192.68

Finding the Fourth Proportional to 80,878.50, 121,183.58 and 49,192.68

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Solution

The fourth proportional to 80,878.50, 121,183.58 and 49,192.68 is: 73,707.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,878.50 : 121,183.58 = 49,192.68 : x
  2. Step 2: Convert to fraction form
    80,878.50/121,183.58 = 49,192.68/x
  3. Step 3: Cross multiply
    80,878.50x = 121,183.58 × 49,192.68
  4. Step 4: Simplify right side
    80,878.50x = 5,961,345,072.19
  5. Step 5: Solve for x
    x = 5,961,345,072.19/80,878.50
  6. Step 6: Final answer
    x = 73,707.41

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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.