Home / 54,678.91-81,989.20-28,318.27

Finding the Fourth Proportional to 54,678.91, 81,989.20 and 28,318.27

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Solution

The fourth proportional to 54,678.91, 81,989.20 and 28,318.27 is: 42,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,678.91 : 81,989.20 = 28,318.27 : x
  2. Step 2: Convert to fraction form
    54,678.91/81,989.20 = 28,318.27/x
  3. Step 3: Cross multiply
    54,678.91x = 81,989.20 × 28,318.27
  4. Step 4: Simplify right side
    54,678.91x = 2,321,792,302.68
  5. Step 5: Solve for x
    x = 2,321,792,302.68/54,678.91
  6. Step 6: Final answer
    x = 42,462.30

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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.