Home / 54,728.91-81,945.30-28,378.26

Finding the Fourth Proportional to 54,728.91, 81,945.30 and 28,378.26

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Solution

The fourth proportional to 54,728.91, 81,945.30 and 28,378.26 is: 42,490.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,728.91 : 81,945.30 = 28,378.26 : x
  2. Step 2: Convert to fraction form
    54,728.91/81,945.30 = 28,378.26/x
  3. Step 3: Cross multiply
    54,728.91x = 81,945.30 × 28,378.26
  4. Step 4: Simplify right side
    54,728.91x = 2,325,465,029.18
  5. Step 5: Solve for x
    x = 2,325,465,029.18/54,728.91
  6. Step 6: Final answer
    x = 42,490.61

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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.