Home / 76,919.96-115,374.46-20,763.27

Finding the Fourth Proportional to 76,919.96, 115,374.46 and 20,763.27

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Solution

The fourth proportional to 76,919.96, 115,374.46 and 20,763.27 is: 31,143.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,919.96 : 115,374.46 = 20,763.27 : x
  2. Step 2: Convert to fraction form
    76,919.96/115,374.46 = 20,763.27/x
  3. Step 3: Cross multiply
    76,919.96x = 115,374.46 × 20,763.27
  4. Step 4: Simplify right side
    76,919.96x = 2,395,551,064.08
  5. Step 5: Solve for x
    x = 2,395,551,064.08/76,919.96
  6. Step 6: Final answer
    x = 31,143.43

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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.