Home / 76,926.76-115,380.79-20,762.57

Finding the Fourth Proportional to 76,926.76, 115,380.79 and 20,762.57

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Solution

The fourth proportional to 76,926.76, 115,380.79 and 20,762.57 is: 31,141.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,926.76 : 115,380.79 = 20,762.57 : x
  2. Step 2: Convert to fraction form
    76,926.76/115,380.79 = 20,762.57/x
  3. Step 3: Cross multiply
    76,926.76x = 115,380.79 × 20,762.57
  4. Step 4: Simplify right side
    76,926.76x = 2,395,601,729.03
  5. Step 5: Solve for x
    x = 2,395,601,729.03/76,926.76
  6. Step 6: Final answer
    x = 31,141.33

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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.