Home / 107,811.20-161,691.14-47,806.76

Finding the Fourth Proportional to 107,811.20, 161,691.14 and 47,806.76

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Solution

The fourth proportional to 107,811.20, 161,691.14 and 47,806.76 is: 71,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,811.20 : 161,691.14 = 47,806.76 : x
  2. Step 2: Convert to fraction form
    107,811.20/161,691.14 = 47,806.76/x
  3. Step 3: Cross multiply
    107,811.20x = 161,691.14 × 47,806.76
  4. Step 4: Simplify right side
    107,811.20x = 7,729,928,869.43
  5. Step 5: Solve for x
    x = 7,729,928,869.43/107,811.20
  6. Step 6: Final answer
    x = 71,698.75

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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.