Home / 78,540.46-117,766.07-53,610.68

Finding the Fourth Proportional to 78,540.46, 117,766.07 and 53,610.68

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Solution

The fourth proportional to 78,540.46, 117,766.07 and 53,610.68 is: 80,385.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,540.46 : 117,766.07 = 53,610.68 : x
  2. Step 2: Convert to fraction form
    78,540.46/117,766.07 = 53,610.68/x
  3. Step 3: Cross multiply
    78,540.46x = 117,766.07 × 53,610.68
  4. Step 4: Simplify right side
    78,540.46x = 6,313,519,119.99
  5. Step 5: Solve for x
    x = 6,313,519,119.99/78,540.46
  6. Step 6: Final answer
    x = 80,385.57

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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.