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Finding the Fourth Proportional to 34,787.31, 48,006.50 and 19,679.65

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Solution

The fourth proportional to 34,787.31, 48,006.50 and 19,679.65 is: 27,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,787.31 : 48,006.50 = 19,679.65 : x
  2. Step 2: Convert to fraction form
    34,787.31/48,006.50 = 19,679.65/x
  3. Step 3: Cross multiply
    34,787.31x = 48,006.50 × 19,679.65
  4. Step 4: Simplify right side
    34,787.31x = 944,751,117.73
  5. Step 5: Solve for x
    x = 944,751,117.73/34,787.31
  6. Step 6: Final answer
    x = 27,157.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.