Home / 68,528.20-102,808.66-21,781.16

Finding the Fourth Proportional to 68,528.20, 102,808.66 and 21,781.16

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Solution

The fourth proportional to 68,528.20, 102,808.66 and 21,781.16 is: 32,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,528.20 : 102,808.66 = 21,781.16 : x
  2. Step 2: Convert to fraction form
    68,528.20/102,808.66 = 21,781.16/x
  3. Step 3: Cross multiply
    68,528.20x = 102,808.66 × 21,781.16
  4. Step 4: Simplify right side
    68,528.20x = 2,239,291,872.85
  5. Step 5: Solve for x
    x = 2,239,291,872.85/68,528.20
  6. Step 6: Final answer
    x = 32,676.94

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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.