Home / 81,339.64-121,961.24-25,163.12

Finding the Fourth Proportional to 81,339.64, 121,961.24 and 25,163.12

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Solution

The fourth proportional to 81,339.64, 121,961.24 and 25,163.12 is: 37,729.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,339.64 : 121,961.24 = 25,163.12 : x
  2. Step 2: Convert to fraction form
    81,339.64/121,961.24 = 25,163.12/x
  3. Step 3: Cross multiply
    81,339.64x = 121,961.24 × 25,163.12
  4. Step 4: Simplify right side
    81,339.64x = 3,068,925,317.47
  5. Step 5: Solve for x
    x = 3,068,925,317.47/81,339.64
  6. Step 6: Final answer
    x = 37,729.76

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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.