Home / 81,516.78-122,261.94-22,338.72

Finding the Fourth Proportional to 81,516.78, 122,261.94 and 22,338.72

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Solution

The fourth proportional to 81,516.78, 122,261.94 and 22,338.72 is: 33,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,516.78 : 122,261.94 = 22,338.72 : x
  2. Step 2: Convert to fraction form
    81,516.78/122,261.94 = 22,338.72/x
  3. Step 3: Cross multiply
    81,516.78x = 122,261.94 × 22,338.72
  4. Step 4: Simplify right side
    81,516.78x = 2,731,175,244.32
  5. Step 5: Solve for x
    x = 2,731,175,244.32/81,516.78
  6. Step 6: Final answer
    x = 33,504.45

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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.