Home / 76,789.29-115,043.58-55,677.03

Finding the Fourth Proportional to 76,789.29, 115,043.58 and 55,677.03

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Solution

The fourth proportional to 76,789.29, 115,043.58 and 55,677.03 is: 83,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,789.29 : 115,043.58 = 55,677.03 : x
  2. Step 2: Convert to fraction form
    76,789.29/115,043.58 = 55,677.03/x
  3. Step 3: Cross multiply
    76,789.29x = 115,043.58 × 55,677.03
  4. Step 4: Simplify right side
    76,789.29x = 6,405,284,854.97
  5. Step 5: Solve for x
    x = 6,405,284,854.97/76,789.29
  6. Step 6: Final answer
    x = 83,413.78

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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.