Home / 81,344,115.24-122,016,074.94-20,759,847.72

Finding the Fourth Proportional to 81,344,115.24, 122,016,074.94 and 20,759,847.72

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Solution

The fourth proportional to 81,344,115.24, 122,016,074.94 and 20,759,847.72 is: 31,139,746.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344,115.24 : 122,016,074.94 = 20,759,847.72 : x
  2. Step 2: Convert to fraction form
    81,344,115.24/122,016,074.94 = 20,759,847.72/x
  3. Step 3: Cross multiply
    81,344,115.24x = 122,016,074.94 × 20,759,847.72
  4. Step 4: Simplify right side
    81,344,115.24x = 2,533,035,135,146,508
  5. Step 5: Solve for x
    x = 2,533,035,135,146,508/81,344,115.24
  6. Step 6: Final answer
    x = 31,139,746.59

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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.