Home / 54,530.55-81,779.94-21,243.15

Finding the Fourth Proportional to 54,530.55, 81,779.94 and 21,243.15

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Solution

The fourth proportional to 54,530.55, 81,779.94 and 21,243.15 is: 31,858.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,530.55 : 81,779.94 = 21,243.15 : x
  2. Step 2: Convert to fraction form
    54,530.55/81,779.94 = 21,243.15/x
  3. Step 3: Cross multiply
    54,530.55x = 81,779.94 × 21,243.15
  4. Step 4: Simplify right side
    54,530.55x = 1,737,263,532.41
  5. Step 5: Solve for x
    x = 1,737,263,532.41/54,530.55
  6. Step 6: Final answer
    x = 31,858.54

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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.