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Finding the Fourth Proportional to 45,128, 67,692 and 12,296

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Solution

The fourth proportional to 45,128, 67,692 and 12,296 is: 18,444

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,128 : 67,692 = 12,296 : x
  2. Step 2: Convert to fraction form
    45,128/67,692 = 12,296/x
  3. Step 3: Cross multiply
    45,128x = 67,692 × 12,296
  4. Step 4: Simplify right side
    45,128x = 832,340,832
  5. Step 5: Solve for x
    x = 832,340,832/45,128
  6. Step 6: Final answer
    x = 18,444

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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.