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Finding the Fourth Proportional to 114,787.70, 172,135.41 and 43,685.92

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Solution

The fourth proportional to 114,787.70, 172,135.41 and 43,685.92 is: 65,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,787.70 : 172,135.41 = 43,685.92 : x
  2. Step 2: Convert to fraction form
    114,787.70/172,135.41 = 43,685.92/x
  3. Step 3: Cross multiply
    114,787.70x = 172,135.41 × 43,685.92
  4. Step 4: Simplify right side
    114,787.70x = 7,519,893,750.43
  5. Step 5: Solve for x
    x = 7,519,893,750.43/114,787.70
  6. Step 6: Final answer
    x = 65,511.32

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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.