Home / 75,815.38-113,536.18-47,665.60

Finding the Fourth Proportional to 75,815.38, 113,536.18 and 47,665.60

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Solution

The fourth proportional to 75,815.38, 113,536.18 and 47,665.60 is: 71,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,815.38 : 113,536.18 = 47,665.60 : x
  2. Step 2: Convert to fraction form
    75,815.38/113,536.18 = 47,665.60/x
  3. Step 3: Cross multiply
    75,815.38x = 113,536.18 × 47,665.60
  4. Step 4: Simplify right side
    75,815.38x = 5,411,770,141.41
  5. Step 5: Solve for x
    x = 5,411,770,141.41/75,815.38
  6. Step 6: Final answer
    x = 71,380.90

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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.