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Finding the Fourth Proportional to 40,605.05, 60,914.14 and 12,518.53

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Solution

The fourth proportional to 40,605.05, 60,914.14 and 12,518.53 is: 18,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,605.05 : 60,914.14 = 12,518.53 : x
  2. Step 2: Convert to fraction form
    40,605.05/60,914.14 = 12,518.53/x
  3. Step 3: Cross multiply
    40,605.05x = 60,914.14 × 12,518.53
  4. Step 4: Simplify right side
    40,605.05x = 762,555,489.01
  5. Step 5: Solve for x
    x = 762,555,489.01/40,605.05
  6. Step 6: Final answer
    x = 18,779.82

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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.