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Finding the Fourth Proportional to 90,551.56, 135,827.23 and 34,391.57

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Solution

The fourth proportional to 90,551.56, 135,827.23 and 34,391.57 is: 51,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,551.56 : 135,827.23 = 34,391.57 : x
  2. Step 2: Convert to fraction form
    90,551.56/135,827.23 = 34,391.57/x
  3. Step 3: Cross multiply
    90,551.56x = 135,827.23 × 34,391.57
  4. Step 4: Simplify right side
    90,551.56x = 4,671,310,891.09
  5. Step 5: Solve for x
    x = 4,671,310,891.09/90,551.56
  6. Step 6: Final answer
    x = 51,587.30

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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.