Home / 89,678.44-123,756.24-49,391.86

Finding the Fourth Proportional to 89,678.44, 123,756.24 and 49,391.86

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Solution

The fourth proportional to 89,678.44, 123,756.24 and 49,391.86 is: 68,160.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,678.44 : 123,756.24 = 49,391.86 : x
  2. Step 2: Convert to fraction form
    89,678.44/123,756.24 = 49,391.86/x
  3. Step 3: Cross multiply
    89,678.44x = 123,756.24 × 49,391.86
  4. Step 4: Simplify right side
    89,678.44x = 6,112,550,880.21
  5. Step 5: Solve for x
    x = 6,112,550,880.21/89,678.44
  6. Step 6: Final answer
    x = 68,160.76

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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.