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Finding the Fourth Proportional to 29,908.54, 40,974.88 and 28,787.50

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Solution

The fourth proportional to 29,908.54, 40,974.88 and 28,787.50 is: 39,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,908.54 : 40,974.88 = 28,787.50 : x
  2. Step 2: Convert to fraction form
    29,908.54/40,974.88 = 28,787.50/x
  3. Step 3: Cross multiply
    29,908.54x = 40,974.88 × 28,787.50
  4. Step 4: Simplify right side
    29,908.54x = 1,179,564,358
  5. Step 5: Solve for x
    x = 1,179,564,358/29,908.54
  6. Step 6: Final answer
    x = 39,439.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.