Home / 71,640,396.56-107,461,761.24-20,522,216.72

Finding the Fourth Proportional to 71,640,396.56, 107,461,761.24 and 20,522,216.72

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Solution

The fourth proportional to 71,640,396.56, 107,461,761.24 and 20,522,216.72 is: 30,783,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640,396.56 : 107,461,761.24 = 20,522,216.72 : x
  2. Step 2: Convert to fraction form
    71,640,396.56/107,461,761.24 = 20,522,216.72/x
  3. Step 3: Cross multiply
    71,640,396.56x = 107,461,761.24 × 20,522,216.72
  4. Step 4: Simplify right side
    71,640,396.56x = 2,205,353,553,625,788.75
  5. Step 5: Solve for x
    x = 2,205,353,553,625,788.75/71,640,396.56
  6. Step 6: Final answer
    x = 30,783,659.21

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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.