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Finding the Fourth Proportional to 55,136.60, 82,704.90 and 18,195.80

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Solution

The fourth proportional to 55,136.60, 82,704.90 and 18,195.80 is: 27,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.60 : 82,704.90 = 18,195.80 : x
  2. Step 2: Convert to fraction form
    55,136.60/82,704.90 = 18,195.80/x
  3. Step 3: Cross multiply
    55,136.60x = 82,704.90 × 18,195.80
  4. Step 4: Simplify right side
    55,136.60x = 1,504,881,819.42
  5. Step 5: Solve for x
    x = 1,504,881,819.42/55,136.60
  6. Step 6: Final answer
    x = 27,293.70

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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.