Home / 90,211.64-135,383.09-40,348.04

Finding the Fourth Proportional to 90,211.64, 135,383.09 and 40,348.04

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Solution

The fourth proportional to 90,211.64, 135,383.09 and 40,348.04 is: 60,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,211.64 : 135,383.09 = 40,348.04 : x
  2. Step 2: Convert to fraction form
    90,211.64/135,383.09 = 40,348.04/x
  3. Step 3: Cross multiply
    90,211.64x = 135,383.09 × 40,348.04
  4. Step 4: Simplify right side
    90,211.64x = 5,462,441,451.99
  5. Step 5: Solve for x
    x = 5,462,441,451.99/90,211.64
  6. Step 6: Final answer
    x = 60,551.41

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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.