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Finding the Fourth Proportional to 45,238.59, 67,846.95 and 18,963

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Solution

The fourth proportional to 45,238.59, 67,846.95 and 18,963 is: 28,439.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,238.59 : 67,846.95 = 18,963 : x
  2. Step 2: Convert to fraction form
    45,238.59/67,846.95 = 18,963/x
  3. Step 3: Cross multiply
    45,238.59x = 67,846.95 × 18,963
  4. Step 4: Simplify right side
    45,238.59x = 1,286,581,712.85
  5. Step 5: Solve for x
    x = 1,286,581,712.85/45,238.59
  6. Step 6: Final answer
    x = 28,439.92

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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.