Home / 80,788.19-121,126.07-35,785.12

Finding the Fourth Proportional to 80,788.19, 121,126.07 and 35,785.12

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Solution

The fourth proportional to 80,788.19, 121,126.07 and 35,785.12 is: 53,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,788.19 : 121,126.07 = 35,785.12 : x
  2. Step 2: Convert to fraction form
    80,788.19/121,126.07 = 35,785.12/x
  3. Step 3: Cross multiply
    80,788.19x = 121,126.07 × 35,785.12
  4. Step 4: Simplify right side
    80,788.19x = 4,334,510,736.73
  5. Step 5: Solve for x
    x = 4,334,510,736.73/80,788.19
  6. Step 6: Final answer
    x = 53,652.78

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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.