Home / 54,980.92-82,477.32-19,912.78

Finding the Fourth Proportional to 54,980.92, 82,477.32 and 19,912.78

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Solution

The fourth proportional to 54,980.92, 82,477.32 and 19,912.78 is: 29,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,980.92 : 82,477.32 = 19,912.78 : x
  2. Step 2: Convert to fraction form
    54,980.92/82,477.32 = 19,912.78/x
  3. Step 3: Cross multiply
    54,980.92x = 82,477.32 × 19,912.78
  4. Step 4: Simplify right side
    54,980.92x = 1,642,352,728.15
  5. Step 5: Solve for x
    x = 1,642,352,728.15/54,980.92
  6. Step 6: Final answer
    x = 29,871.32

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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.