Home / 89,651.45-123,719.92-49,368.96

Finding the Fourth Proportional to 89,651.45, 123,719.92 and 49,368.96

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Solution

The fourth proportional to 89,651.45, 123,719.92 and 49,368.96 is: 68,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,651.45 : 123,719.92 = 49,368.96 : x
  2. Step 2: Convert to fraction form
    89,651.45/123,719.92 = 49,368.96/x
  3. Step 3: Cross multiply
    89,651.45x = 123,719.92 × 49,368.96
  4. Step 4: Simplify right side
    89,651.45x = 6,107,923,781.68
  5. Step 5: Solve for x
    x = 6,107,923,781.68/89,651.45
  6. Step 6: Final answer
    x = 68,129.67

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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.