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Finding the Fourth Proportional to 55,198.80, 82,757.70 and 21,902.40

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Solution

The fourth proportional to 55,198.80, 82,757.70 and 21,902.40 is: 32,837.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,198.80 : 82,757.70 = 21,902.40 : x
  2. Step 2: Convert to fraction form
    55,198.80/82,757.70 = 21,902.40/x
  3. Step 3: Cross multiply
    55,198.80x = 82,757.70 × 21,902.40
  4. Step 4: Simplify right side
    55,198.80x = 1,812,592,248.48
  5. Step 5: Solve for x
    x = 1,812,592,248.48/55,198.80
  6. Step 6: Final answer
    x = 32,837.53

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1.5x scale

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.