Home / 107,729.11-161,611.20-31,835.35

Finding the Fourth Proportional to 107,729.11, 161,611.20 and 31,835.35

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Solution

The fourth proportional to 107,729.11, 161,611.20 and 31,835.35 is: 47,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,729.11 : 161,611.20 = 31,835.35 : x
  2. Step 2: Convert to fraction form
    107,729.11/161,611.20 = 31,835.35/x
  3. Step 3: Cross multiply
    107,729.11x = 161,611.20 × 31,835.35
  4. Step 4: Simplify right side
    107,729.11x = 5,144,949,115.92
  5. Step 5: Solve for x
    x = 5,144,949,115.92/107,729.11
  6. Step 6: Final answer
    x = 47,758.21

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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.