Home / 54,260.96-81,403.84-20,981.28

Finding the Fourth Proportional to 54,260.96, 81,403.84 and 20,981.28

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Solution

The fourth proportional to 54,260.96, 81,403.84 and 20,981.28 is: 31,476.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,260.96 : 81,403.84 = 20,981.28 : x
  2. Step 2: Convert to fraction form
    54,260.96/81,403.84 = 20,981.28/x
  3. Step 3: Cross multiply
    54,260.96x = 81,403.84 × 20,981.28
  4. Step 4: Simplify right side
    54,260.96x = 1,707,956,760.12
  5. Step 5: Solve for x
    x = 1,707,956,760.12/54,260.96
  6. Step 6: Final answer
    x = 31,476.71

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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.