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Finding the Fourth Proportional to 40,605.55, 60,914.89 and 12,519.03

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Solution

The fourth proportional to 40,605.55, 60,914.89 and 12,519.03 is: 18,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,605.55 : 60,914.89 = 12,519.03 : x
  2. Step 2: Convert to fraction form
    40,605.55/60,914.89 = 12,519.03/x
  3. Step 3: Cross multiply
    40,605.55x = 60,914.89 × 12,519.03
  4. Step 4: Simplify right side
    40,605.55x = 762,595,335.36
  5. Step 5: Solve for x
    x = 762,595,335.36/40,605.55
  6. Step 6: Final answer
    x = 18,780.57

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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.