Home / 89,787.90-123,907.56-49,500.74

Finding the Fourth Proportional to 89,787.90, 123,907.56 and 49,500.74

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Solution

The fourth proportional to 89,787.90, 123,907.56 and 49,500.74 is: 68,311.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,787.90 : 123,907.56 = 49,500.74 : x
  2. Step 2: Convert to fraction form
    89,787.90/123,907.56 = 49,500.74/x
  3. Step 3: Cross multiply
    89,787.90x = 123,907.56 × 49,500.74
  4. Step 4: Simplify right side
    89,787.90x = 6,133,515,911.59
  5. Step 5: Solve for x
    x = 6,133,515,911.59/89,787.90
  6. Step 6: Final answer
    x = 68,311.16

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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.