Home / 54,426.74-81,619.11-21,142.42

Finding the Fourth Proportional to 54,426.74, 81,619.11 and 21,142.42

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Solution

The fourth proportional to 54,426.74, 81,619.11 and 21,142.42 is: 31,705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,426.74 : 81,619.11 = 21,142.42 : x
  2. Step 2: Convert to fraction form
    54,426.74/81,619.11 = 21,142.42/x
  3. Step 3: Cross multiply
    54,426.74x = 81,619.11 × 21,142.42
  4. Step 4: Simplify right side
    54,426.74x = 1,725,625,299.60
  5. Step 5: Solve for x
    x = 1,725,625,299.60/54,426.74
  6. Step 6: Final answer
    x = 31,705.47

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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.