Home / 55,007.70-82,511.55-51,321.30

Finding the Fourth Proportional to 55,007.70, 82,511.55 and 51,321.30

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Solution

The fourth proportional to 55,007.70, 82,511.55 and 51,321.30 is: 76,981.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,007.70 : 82,511.55 = 51,321.30 : x
  2. Step 2: Convert to fraction form
    55,007.70/82,511.55 = 51,321.30/x
  3. Step 3: Cross multiply
    55,007.70x = 82,511.55 × 51,321.30
  4. Step 4: Simplify right side
    55,007.70x = 4,234,600,011.02
  5. Step 5: Solve for x
    x = 4,234,600,011.02/55,007.70
  6. Step 6: Final answer
    x = 76,981.95

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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.