Home / 54,943.20-82,414.80-19,878.30

Finding the Fourth Proportional to 54,943.20, 82,414.80 and 19,878.30

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Solution

The fourth proportional to 54,943.20, 82,414.80 and 19,878.30 is: 29,817.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,943.20 : 82,414.80 = 19,878.30 : x
  2. Step 2: Convert to fraction form
    54,943.20/82,414.80 = 19,878.30/x
  3. Step 3: Cross multiply
    54,943.20x = 82,414.80 × 19,878.30
  4. Step 4: Simplify right side
    54,943.20x = 1,638,266,118.84
  5. Step 5: Solve for x
    x = 1,638,266,118.84/54,943.20
  6. Step 6: Final answer
    x = 29,817.45

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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.