Home / 89,664.90-123,737.58-49,378.56

Finding the Fourth Proportional to 89,664.90, 123,737.58 and 49,378.56

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Solution

The fourth proportional to 89,664.90, 123,737.58 and 49,378.56 is: 68,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,664.90 : 123,737.58 = 49,378.56 : x
  2. Step 2: Convert to fraction form
    89,664.90/123,737.58 = 49,378.56/x
  3. Step 3: Cross multiply
    89,664.90x = 123,737.58 × 49,378.56
  4. Step 4: Simplify right side
    89,664.90x = 6,109,983,518.28
  5. Step 5: Solve for x
    x = 6,109,983,518.28/89,664.90
  6. Step 6: Final answer
    x = 68,142.42

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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.