Home / 78,359.20-117,556.08-25,766.56

Finding the Fourth Proportional to 78,359.20, 117,556.08 and 25,766.56

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Solution

The fourth proportional to 78,359.20, 117,556.08 and 25,766.56 is: 38,655.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.20 : 117,556.08 = 25,766.56 : x
  2. Step 2: Convert to fraction form
    78,359.20/117,556.08 = 25,766.56/x
  3. Step 3: Cross multiply
    78,359.20x = 117,556.08 × 25,766.56
  4. Step 4: Simplify right side
    78,359.20x = 3,029,015,788.68
  5. Step 5: Solve for x
    x = 3,029,015,788.68/78,359.20
  6. Step 6: Final answer
    x = 38,655.52

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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.