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Finding the Fourth Proportional to 90,192.92, 124,516.32 and 54,392

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Solution

The fourth proportional to 90,192.92, 124,516.32 and 54,392 is: 75,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,192.92 : 124,516.32 = 54,392 : x
  2. Step 2: Convert to fraction form
    90,192.92/124,516.32 = 54,392/x
  3. Step 3: Cross multiply
    90,192.92x = 124,516.32 × 54,392
  4. Step 4: Simplify right side
    90,192.92x = 6,772,691,677.44
  5. Step 5: Solve for x
    x = 6,772,691,677.44/90,192.92
  6. Step 6: Final answer
    x = 75,091.17

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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.