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Finding the Fourth Proportional to 89,787.78, 134,713.90 and 38,474.91

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Solution

The fourth proportional to 89,787.78, 134,713.90 and 38,474.91 is: 57,726.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,787.78 : 134,713.90 = 38,474.91 : x
  2. Step 2: Convert to fraction form
    89,787.78/134,713.90 = 38,474.91/x
  3. Step 3: Cross multiply
    89,787.78x = 134,713.90 × 38,474.91
  4. Step 4: Simplify right side
    89,787.78x = 5,183,104,504.68
  5. Step 5: Solve for x
    x = 5,183,104,504.68/89,787.78
  6. Step 6: Final answer
    x = 57,726.17

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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.