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Finding the Fourth Proportional to 34,855.70, 48,099.54 and 18,939.80

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Solution

The fourth proportional to 34,855.70, 48,099.54 and 18,939.80 is: 26,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,855.70 : 48,099.54 = 18,939.80 : x
  2. Step 2: Convert to fraction form
    34,855.70/48,099.54 = 18,939.80/x
  3. Step 3: Cross multiply
    34,855.70x = 48,099.54 × 18,939.80
  4. Step 4: Simplify right side
    34,855.70x = 910,995,667.69
  5. Step 5: Solve for x
    x = 910,995,667.69/34,855.70
  6. Step 6: Final answer
    x = 26,136.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.