Home / 68,528.06-102,788.42-21,777.30

Finding the Fourth Proportional to 68,528.06, 102,788.42 and 21,777.30

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Solution

The fourth proportional to 68,528.06, 102,788.42 and 21,777.30 is: 32,664.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,528.06 : 102,788.42 = 21,777.30 : x
  2. Step 2: Convert to fraction form
    68,528.06/102,788.42 = 21,777.30/x
  3. Step 3: Cross multiply
    68,528.06x = 102,788.42 × 21,777.30
  4. Step 4: Simplify right side
    68,528.06x = 2,238,454,258.87
  5. Step 5: Solve for x
    x = 2,238,454,258.87/68,528.06
  6. Step 6: Final answer
    x = 32,664.78

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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.