Home / 81,512.63-122,268.39-25,352.76

Finding the Fourth Proportional to 81,512.63, 122,268.39 and 25,352.76

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Solution

The fourth proportional to 81,512.63, 122,268.39 and 25,352.76 is: 38,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.63 : 122,268.39 = 25,352.76 : x
  2. Step 2: Convert to fraction form
    81,512.63/122,268.39 = 25,352.76/x
  3. Step 3: Cross multiply
    81,512.63x = 122,268.39 × 25,352.76
  4. Step 4: Simplify right side
    81,512.63x = 3,099,841,510.69
  5. Step 5: Solve for x
    x = 3,099,841,510.69/81,512.63
  6. Step 6: Final answer
    x = 38,028.97

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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.