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Finding the Fourth Proportional to 54,336.88, 81,489.52 and 21,049.53

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Solution

The fourth proportional to 54,336.88, 81,489.52 and 21,049.53 is: 31,568.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,336.88 : 81,489.52 = 21,049.53 : x
  2. Step 2: Convert to fraction form
    54,336.88/81,489.52 = 21,049.53/x
  3. Step 3: Cross multiply
    54,336.88x = 81,489.52 × 21,049.53
  4. Step 4: Simplify right side
    54,336.88x = 1,715,316,095.93
  5. Step 5: Solve for x
    x = 1,715,316,095.93/54,336.88
  6. Step 6: Final answer
    x = 31,568.17

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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.