Home / 68,919.92-103,420.50-28,945.91

Finding the Fourth Proportional to 68,919.92, 103,420.50 and 28,945.91

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Solution

The fourth proportional to 68,919.92, 103,420.50 and 28,945.91 is: 43,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,919.92 : 103,420.50 = 28,945.91 : x
  2. Step 2: Convert to fraction form
    68,919.92/103,420.50 = 28,945.91/x
  3. Step 3: Cross multiply
    68,919.92x = 103,420.50 × 28,945.91
  4. Step 4: Simplify right side
    68,919.92x = 2,993,600,743.71
  5. Step 5: Solve for x
    x = 2,993,600,743.71/68,919.92
  6. Step 6: Final answer
    x = 43,435.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.