Home / 71,439.88-107,112.54-31,942.60

Finding the Fourth Proportional to 71,439.88, 107,112.54 and 31,942.60

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Solution

The fourth proportional to 71,439.88, 107,112.54 and 31,942.60 is: 47,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,439.88 : 107,112.54 = 31,942.60 : x
  2. Step 2: Convert to fraction form
    71,439.88/107,112.54 = 31,942.60/x
  3. Step 3: Cross multiply
    71,439.88x = 107,112.54 × 31,942.60
  4. Step 4: Simplify right side
    71,439.88x = 3,421,453,020.20
  5. Step 5: Solve for x
    x = 3,421,453,020.20/71,439.88
  6. Step 6: Final answer
    x = 47,892.76

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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.