Home / 78,126.09-117,170.55-33,728.55

Finding the Fourth Proportional to 78,126.09, 117,170.55 and 33,728.55

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Solution

The fourth proportional to 78,126.09, 117,170.55 and 33,728.55 is: 50,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,126.09 : 117,170.55 = 33,728.55 : x
  2. Step 2: Convert to fraction form
    78,126.09/117,170.55 = 33,728.55/x
  3. Step 3: Cross multiply
    78,126.09x = 117,170.55 × 33,728.55
  4. Step 4: Simplify right side
    78,126.09x = 3,951,992,754.20
  5. Step 5: Solve for x
    x = 3,951,992,754.20/78,126.09
  6. Step 6: Final answer
    x = 50,584.80

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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.