Home / 90,439.37-135,640.58-34,260.11

Finding the Fourth Proportional to 90,439.37, 135,640.58 and 34,260.11

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Solution

The fourth proportional to 90,439.37, 135,640.58 and 34,260.11 is: 51,383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,439.37 : 135,640.58 = 34,260.11 : x
  2. Step 2: Convert to fraction form
    90,439.37/135,640.58 = 34,260.11/x
  3. Step 3: Cross multiply
    90,439.37x = 135,640.58 × 34,260.11
  4. Step 4: Simplify right side
    90,439.37x = 4,647,060,341.76
  5. Step 5: Solve for x
    x = 4,647,060,341.76/90,439.37
  6. Step 6: Final answer
    x = 51,383.16

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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.