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Finding the Fourth Proportional to 88,137.92, 121,631.76 and 49,896.47

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Solution

The fourth proportional to 88,137.92, 121,631.76 and 49,896.47 is: 68,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,137.92 : 121,631.76 = 49,896.47 : x
  2. Step 2: Convert to fraction form
    88,137.92/121,631.76 = 49,896.47/x
  3. Step 3: Cross multiply
    88,137.92x = 121,631.76 × 49,896.47
  4. Step 4: Simplify right side
    88,137.92x = 6,068,995,767.97
  5. Step 5: Solve for x
    x = 6,068,995,767.97/88,137.92
  6. Step 6: Final answer
    x = 68,857.94

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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.