Home / 90,581.28-135,910.34-48,450.39

Finding the Fourth Proportional to 90,581.28, 135,910.34 and 48,450.39

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Solution

The fourth proportional to 90,581.28, 135,910.34 and 48,450.39 is: 72,696.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,581.28 : 135,910.34 = 48,450.39 : x
  2. Step 2: Convert to fraction form
    90,581.28/135,910.34 = 48,450.39/x
  3. Step 3: Cross multiply
    90,581.28x = 135,910.34 × 48,450.39
  4. Step 4: Simplify right side
    90,581.28x = 6,584,908,978.03
  5. Step 5: Solve for x
    x = 6,584,908,978.03/90,581.28
  6. Step 6: Final answer
    x = 72,696.14

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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.