Home / 91,401.80-126,134.70-53,170.52

Finding the Fourth Proportional to 91,401.80, 126,134.70 and 53,170.52

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Solution

The fourth proportional to 91,401.80, 126,134.70 and 53,170.52 is: 73,375.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,401.80 : 126,134.70 = 53,170.52 : x
  2. Step 2: Convert to fraction form
    91,401.80/126,134.70 = 53,170.52/x
  3. Step 3: Cross multiply
    91,401.80x = 126,134.70 × 53,170.52
  4. Step 4: Simplify right side
    91,401.80x = 6,706,647,589.04
  5. Step 5: Solve for x
    x = 6,706,647,589.04/91,401.80
  6. Step 6: Final answer
    x = 73,375.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.