Home / 89,640.52-123,742.32-63,815.80

Finding the Fourth Proportional to 89,640.52, 123,742.32 and 63,815.80

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Solution

The fourth proportional to 89,640.52, 123,742.32 and 63,815.80 is: 88,093.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,640.52 : 123,742.32 = 63,815.80 : x
  2. Step 2: Convert to fraction form
    89,640.52/123,742.32 = 63,815.80/x
  3. Step 3: Cross multiply
    89,640.52x = 123,742.32 × 63,815.80
  4. Step 4: Simplify right side
    89,640.52x = 7,896,715,144.66
  5. Step 5: Solve for x
    x = 7,896,715,144.66/89,640.52
  6. Step 6: Final answer
    x = 88,093.14

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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.