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Finding the Fourth Proportional to 55,136.40, 82,704.60 and 34,093.20

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Solution

The fourth proportional to 55,136.40, 82,704.60 and 34,093.20 is: 51,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,136.40 : 82,704.60 = 34,093.20 : x
  2. Step 2: Convert to fraction form
    55,136.40/82,704.60 = 34,093.20/x
  3. Step 3: Cross multiply
    55,136.40x = 82,704.60 × 34,093.20
  4. Step 4: Simplify right side
    55,136.40x = 2,819,664,468.72
  5. Step 5: Solve for x
    x = 2,819,664,468.72/55,136.40
  6. Step 6: Final answer
    x = 51,139.80

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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.