Home / 89,787.45-123,907.55-49,502.78

Finding the Fourth Proportional to 89,787.45, 123,907.55 and 49,502.78

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Solution

The fourth proportional to 89,787.45, 123,907.55 and 49,502.78 is: 68,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,787.45 : 123,907.55 = 49,502.78 : x
  2. Step 2: Convert to fraction form
    89,787.45/123,907.55 = 49,502.78/x
  3. Step 3: Cross multiply
    89,787.45x = 123,907.55 × 49,502.78
  4. Step 4: Simplify right side
    89,787.45x = 6,133,767,320.94
  5. Step 5: Solve for x
    x = 6,133,767,320.94/89,787.45
  6. Step 6: Final answer
    x = 68,314.31

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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.