Home / 76,722.60-115,074.54-20,566.92

Finding the Fourth Proportional to 76,722.60, 115,074.54 and 20,566.92

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Solution

The fourth proportional to 76,722.60, 115,074.54 and 20,566.92 is: 30,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,722.60 : 115,074.54 = 20,566.92 : x
  2. Step 2: Convert to fraction form
    76,722.60/115,074.54 = 20,566.92/x
  3. Step 3: Cross multiply
    76,722.60x = 115,074.54 × 20,566.92
  4. Step 4: Simplify right side
    76,722.60x = 2,366,728,858.22
  5. Step 5: Solve for x
    x = 2,366,728,858.22/76,722.60
  6. Step 6: Final answer
    x = 30,847.87

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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.