Home / 54,318.69-81,474.53-18,779.03

Finding the Fourth Proportional to 54,318.69, 81,474.53 and 18,779.03

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Solution

The fourth proportional to 54,318.69, 81,474.53 and 18,779.03 is: 28,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,318.69 : 81,474.53 = 18,779.03 : x
  2. Step 2: Convert to fraction form
    54,318.69/81,474.53 = 18,779.03/x
  3. Step 3: Cross multiply
    54,318.69x = 81,474.53 × 18,779.03
  4. Step 4: Simplify right side
    54,318.69x = 1,530,012,141.84
  5. Step 5: Solve for x
    x = 1,530,012,141.84/54,318.69
  6. Step 6: Final answer
    x = 28,167.32

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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.