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Finding the Fourth Proportional to 40,999.96, 61,452.15 and 18,815.68

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Solution

The fourth proportional to 40,999.96, 61,452.15 and 18,815.68 is: 28,201.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,999.96 : 61,452.15 = 18,815.68 : x
  2. Step 2: Convert to fraction form
    40,999.96/61,452.15 = 18,815.68/x
  3. Step 3: Cross multiply
    40,999.96x = 61,452.15 × 18,815.68
  4. Step 4: Simplify right side
    40,999.96x = 1,156,263,989.71
  5. Step 5: Solve for x
    x = 1,156,263,989.71/40,999.96
  6. Step 6: Final answer
    x = 28,201.59

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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.