Home / 76,790.26-115,177.61-20,623.07

Finding the Fourth Proportional to 76,790.26, 115,177.61 and 20,623.07

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Solution

The fourth proportional to 76,790.26, 115,177.61 and 20,623.07 is: 30,932.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.26 : 115,177.61 = 20,623.07 : x
  2. Step 2: Convert to fraction form
    76,790.26/115,177.61 = 20,623.07/x
  3. Step 3: Cross multiply
    76,790.26x = 115,177.61 × 20,623.07
  4. Step 4: Simplify right side
    76,790.26x = 2,375,315,810.35
  5. Step 5: Solve for x
    x = 2,375,315,810.35/76,790.26
  6. Step 6: Final answer
    x = 30,932.51

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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.