Home / 81,521.19-112,451.58-51,258.60

Finding the Fourth Proportional to 81,521.19, 112,451.58 and 51,258.60

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Solution

The fourth proportional to 81,521.19, 112,451.58 and 51,258.60 is: 70,706.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.19 : 112,451.58 = 51,258.60 : x
  2. Step 2: Convert to fraction form
    81,521.19/112,451.58 = 51,258.60/x
  3. Step 3: Cross multiply
    81,521.19x = 112,451.58 × 51,258.60
  4. Step 4: Simplify right side
    81,521.19x = 5,764,110,558.59
  5. Step 5: Solve for x
    x = 5,764,110,558.59/81,521.19
  6. Step 6: Final answer
    x = 70,706.90

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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.