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Finding the Fourth Proportional to 40,807.58, 61,211.64 and 11,228.54

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Solution

The fourth proportional to 40,807.58, 61,211.64 and 11,228.54 is: 16,842.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,807.58 : 61,211.64 = 11,228.54 : x
  2. Step 2: Convert to fraction form
    40,807.58/61,211.64 = 11,228.54/x
  3. Step 3: Cross multiply
    40,807.58x = 61,211.64 × 11,228.54
  4. Step 4: Simplify right side
    40,807.58x = 687,317,348.21
  5. Step 5: Solve for x
    x = 687,317,348.21/40,807.58
  6. Step 6: Final answer
    x = 16,842.88

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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.