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Finding the Fourth Proportional to 55,202.66, 82,817.78 and 21,911.72

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Solution

The fourth proportional to 55,202.66, 82,817.78 and 21,911.72 is: 32,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,202.66 : 82,817.78 = 21,911.72 : x
  2. Step 2: Convert to fraction form
    55,202.66/82,817.78 = 21,911.72/x
  3. Step 3: Cross multiply
    55,202.66x = 82,817.78 × 21,911.72
  4. Step 4: Simplify right side
    55,202.66x = 1,814,680,006.38
  5. Step 5: Solve for x
    x = 1,814,680,006.38/55,202.66
  6. Step 6: Final answer
    x = 32,873.05

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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.