Home / 47,447.68-71,191.30-20,812.81

Finding the Fourth Proportional to 47,447.68, 71,191.30 and 20,812.81

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Solution

The fourth proportional to 47,447.68, 71,191.30 and 20,812.81 is: 31,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,447.68 : 71,191.30 = 20,812.81 : x
  2. Step 2: Convert to fraction form
    47,447.68/71,191.30 = 20,812.81/x
  3. Step 3: Cross multiply
    47,447.68x = 71,191.30 × 20,812.81
  4. Step 4: Simplify right side
    47,447.68x = 1,481,691,000.55
  5. Step 5: Solve for x
    x = 1,481,691,000.55/47,447.68
  6. Step 6: Final answer
    x = 31,227.89

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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.