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Finding the Fourth Proportional to 55,255.50, 76,252.68 and 30,105

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Solution

The fourth proportional to 55,255.50, 76,252.68 and 30,105 is: 41,544.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,255.50 : 76,252.68 = 30,105 : x
  2. Step 2: Convert to fraction form
    55,255.50/76,252.68 = 30,105/x
  3. Step 3: Cross multiply
    55,255.50x = 76,252.68 × 30,105
  4. Step 4: Simplify right side
    55,255.50x = 2,295,586,931.40
  5. Step 5: Solve for x
    x = 2,295,586,931.40/55,255.50
  6. Step 6: Final answer
    x = 41,544.95

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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.