Home / 54,391.55-81,567.40-18,843.69

Finding the Fourth Proportional to 54,391.55, 81,567.40 and 18,843.69

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Solution

The fourth proportional to 54,391.55, 81,567.40 and 18,843.69 is: 28,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,391.55 : 81,567.40 = 18,843.69 : x
  2. Step 2: Convert to fraction form
    54,391.55/81,567.40 = 18,843.69/x
  3. Step 3: Cross multiply
    54,391.55x = 81,567.40 × 18,843.69
  4. Step 4: Simplify right side
    54,391.55x = 1,537,030,845.72
  5. Step 5: Solve for x
    x = 1,537,030,845.72/54,391.55
  6. Step 6: Final answer
    x = 28,258.63

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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.