Home / 81,521.24-112,451.54-51,258.60

Finding the Fourth Proportional to 81,521.24, 112,451.54 and 51,258.60

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Solution

The fourth proportional to 81,521.24, 112,451.54 and 51,258.60 is: 70,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.24 : 112,451.54 = 51,258.60 : x
  2. Step 2: Convert to fraction form
    81,521.24/112,451.54 = 51,258.60/x
  3. Step 3: Cross multiply
    81,521.24x = 112,451.54 × 51,258.60
  4. Step 4: Simplify right side
    81,521.24x = 5,764,108,251.95
  5. Step 5: Solve for x
    x = 5,764,108,251.95/81,521.24
  6. Step 6: Final answer
    x = 70,706.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.