Home / 54,382.88-81,552.36-21,085.40

Finding the Fourth Proportional to 54,382.88, 81,552.36 and 21,085.40

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Solution

The fourth proportional to 54,382.88, 81,552.36 and 21,085.40 is: 31,619.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,382.88 : 81,552.36 = 21,085.40 : x
  2. Step 2: Convert to fraction form
    54,382.88/81,552.36 = 21,085.40/x
  3. Step 3: Cross multiply
    54,382.88x = 81,552.36 × 21,085.40
  4. Step 4: Simplify right side
    54,382.88x = 1,719,564,131.54
  5. Step 5: Solve for x
    x = 1,719,564,131.54/54,382.88
  6. Step 6: Final answer
    x = 31,619.59

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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.