Home / 90,761.10-135,979.65-43,910.70

Finding the Fourth Proportional to 90,761.10, 135,979.65 and 43,910.70

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Solution

The fourth proportional to 90,761.10, 135,979.65 and 43,910.70 is: 65,787.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,761.10 : 135,979.65 = 43,910.70 : x
  2. Step 2: Convert to fraction form
    90,761.10/135,979.65 = 43,910.70/x
  3. Step 3: Cross multiply
    90,761.10x = 135,979.65 × 43,910.70
  4. Step 4: Simplify right side
    90,761.10x = 5,970,961,617.26
  5. Step 5: Solve for x
    x = 5,970,961,617.26/90,761.10
  6. Step 6: Final answer
    x = 65,787.67

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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.