Home / 78,668.35-117,958.78-26,049.13

Finding the Fourth Proportional to 78,668.35, 117,958.78 and 26,049.13

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Solution

The fourth proportional to 78,668.35, 117,958.78 and 26,049.13 is: 39,059.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.35 : 117,958.78 = 26,049.13 : x
  2. Step 2: Convert to fraction form
    78,668.35/117,958.78 = 26,049.13/x
  3. Step 3: Cross multiply
    78,668.35x = 117,958.78 × 26,049.13
  4. Step 4: Simplify right side
    78,668.35x = 3,072,723,594.86
  5. Step 5: Solve for x
    x = 3,072,723,594.86/78,668.35
  6. Step 6: Final answer
    x = 39,059.21

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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.