Home / 89,372.70-123,376.32-51,639.66

Finding the Fourth Proportional to 89,372.70, 123,376.32 and 51,639.66

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Solution

The fourth proportional to 89,372.70, 123,376.32 and 51,639.66 is: 71,286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,372.70 : 123,376.32 = 51,639.66 : x
  2. Step 2: Convert to fraction form
    89,372.70/123,376.32 = 51,639.66/x
  3. Step 3: Cross multiply
    89,372.70x = 123,376.32 × 51,639.66
  4. Step 4: Simplify right side
    89,372.70x = 6,371,111,216.85
  5. Step 5: Solve for x
    x = 6,371,111,216.85/89,372.70
  6. Step 6: Final answer
    x = 71,286.99

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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.