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Finding the Fourth Proportional to 40,245, 60,370.83 and 12,543

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Solution

The fourth proportional to 40,245, 60,370.83 and 12,543 is: 18,815.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,245 : 60,370.83 = 12,543 : x
  2. Step 2: Convert to fraction form
    40,245/60,370.83 = 12,543/x
  3. Step 3: Cross multiply
    40,245x = 60,370.83 × 12,543
  4. Step 4: Simplify right side
    40,245x = 757,231,320.69
  5. Step 5: Solve for x
    x = 757,231,320.69/40,245
  6. Step 6: Final answer
    x = 18,815.54

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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.