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Finding the Fourth Proportional to 90,394.92, 135,593.81 and 34,219.95

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Solution

The fourth proportional to 90,394.92, 135,593.81 and 34,219.95 is: 51,330.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,394.92 : 135,593.81 = 34,219.95 : x
  2. Step 2: Convert to fraction form
    90,394.92/135,593.81 = 34,219.95/x
  3. Step 3: Cross multiply
    90,394.92x = 135,593.81 × 34,219.95
  4. Step 4: Simplify right side
    90,394.92x = 4,640,013,398.51
  5. Step 5: Solve for x
    x = 4,640,013,398.51/90,394.92
  6. Step 6: Final answer
    x = 51,330.47

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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.