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Finding the Fourth Proportional to 69,442.39, 103,556.60 and 61,787.89

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Solution

The fourth proportional to 69,442.39, 103,556.60 and 61,787.89 is: 92,141.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,442.39 : 103,556.60 = 61,787.89 : x
  2. Step 2: Convert to fraction form
    69,442.39/103,556.60 = 61,787.89/x
  3. Step 3: Cross multiply
    69,442.39x = 103,556.60 × 61,787.89
  4. Step 4: Simplify right side
    69,442.39x = 6,398,543,744.31
  5. Step 5: Solve for x
    x = 6,398,543,744.31/69,442.39
  6. Step 6: Final answer
    x = 92,141.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.