Home / 81,404.20-122,106.30-71,562.70

Finding the Fourth Proportional to 81,404.20, 122,106.30 and 71,562.70

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Solution

The fourth proportional to 81,404.20, 122,106.30 and 71,562.70 is: 107,344.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,404.20 : 122,106.30 = 71,562.70 : x
  2. Step 2: Convert to fraction form
    81,404.20/122,106.30 = 71,562.70/x
  3. Step 3: Cross multiply
    81,404.20x = 122,106.30 × 71,562.70
  4. Step 4: Simplify right side
    81,404.20x = 8,738,256,515.01
  5. Step 5: Solve for x
    x = 8,738,256,515.01/81,404.20
  6. Step 6: Final answer
    x = 107,344.05

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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.