Home / 90,650.16-135,928.51-40,687.43

Finding the Fourth Proportional to 90,650.16, 135,928.51 and 40,687.43

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Solution

The fourth proportional to 90,650.16, 135,928.51 and 40,687.43 is: 61,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,650.16 : 135,928.51 = 40,687.43 : x
  2. Step 2: Convert to fraction form
    90,650.16/135,928.51 = 40,687.43/x
  3. Step 3: Cross multiply
    90,650.16x = 135,928.51 × 40,687.43
  4. Step 4: Simplify right side
    90,650.16x = 5,530,580,954.27
  5. Step 5: Solve for x
    x = 5,530,580,954.27/90,650.16
  6. Step 6: Final answer
    x = 61,010.16

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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.