Home / 78,567.52-117,869.04-25,982.56

Finding the Fourth Proportional to 78,567.52, 117,869.04 and 25,982.56

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Solution

The fourth proportional to 78,567.52, 117,869.04 and 25,982.56 is: 38,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,567.52 : 117,869.04 = 25,982.56 : x
  2. Step 2: Convert to fraction form
    78,567.52/117,869.04 = 25,982.56/x
  3. Step 3: Cross multiply
    78,567.52x = 117,869.04 × 25,982.56
  4. Step 4: Simplify right side
    78,567.52x = 3,062,539,403.94
  5. Step 5: Solve for x
    x = 3,062,539,403.94/78,567.52
  6. Step 6: Final answer
    x = 38,979.71

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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.