Home / 81,344,163.24-122,016,146.82-20,759,895.72

Finding the Fourth Proportional to 81,344,163.24, 122,016,146.82 and 20,759,895.72

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Solution

The fourth proportional to 81,344,163.24, 122,016,146.82 and 20,759,895.72 is: 31,139,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344,163.24 : 122,016,146.82 = 20,759,895.72 : x
  2. Step 2: Convert to fraction form
    81,344,163.24/122,016,146.82 = 20,759,895.72/x
  3. Step 3: Cross multiply
    81,344,163.24x = 122,016,146.82 × 20,759,895.72
  4. Step 4: Simplify right side
    81,344,163.24x = 2,533,042,484,139,409.50
  5. Step 5: Solve for x
    x = 2,533,042,484,139,409.50/81,344,163.24
  6. Step 6: Final answer
    x = 31,139,818.56

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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.