Home / 78,512.69-117,769.38-25,212.77

Finding the Fourth Proportional to 78,512.69, 117,769.38 and 25,212.77

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Solution

The fourth proportional to 78,512.69, 117,769.38 and 25,212.77 is: 37,819.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.69 : 117,769.38 = 25,212.77 : x
  2. Step 2: Convert to fraction form
    78,512.69/117,769.38 = 25,212.77/x
  3. Step 3: Cross multiply
    78,512.69x = 117,769.38 × 25,212.77
  4. Step 4: Simplify right side
    78,512.69x = 2,969,292,049.22
  5. Step 5: Solve for x
    x = 2,969,292,049.22/78,512.69
  6. Step 6: Final answer
    x = 37,819.26

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1.5x scale

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.