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Finding the Fourth Proportional to 76,791.26, 115,179.10 and 20,624.07

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Solution

The fourth proportional to 76,791.26, 115,179.10 and 20,624.07 is: 30,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,791.26 : 115,179.10 = 20,624.07 : x
  2. Step 2: Convert to fraction form
    76,791.26/115,179.10 = 20,624.07/x
  3. Step 3: Cross multiply
    76,791.26x = 115,179.10 × 20,624.07
  4. Step 4: Simplify right side
    76,791.26x = 2,375,461,820.94
  5. Step 5: Solve for x
    x = 2,375,461,820.94/76,791.26
  6. Step 6: Final answer
    x = 30,934.01

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1.5x scale

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.