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Finding the Fourth Proportional to 55,149.35, 82,100.30 and 54,821.30

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Solution

The fourth proportional to 55,149.35, 82,100.30 and 54,821.30 is: 81,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,149.35 : 82,100.30 = 54,821.30 : x
  2. Step 2: Convert to fraction form
    55,149.35/82,100.30 = 54,821.30/x
  3. Step 3: Cross multiply
    55,149.35x = 82,100.30 × 54,821.30
  4. Step 4: Simplify right side
    55,149.35x = 4,500,844,491.78
  5. Step 5: Solve for x
    x = 4,500,844,491.78/55,149.35
  6. Step 6: Final answer
    x = 81,611.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.