Home / 90,912.31-136,389.12-27,738.08

Finding the Fourth Proportional to 90,912.31, 136,389.12 and 27,738.08

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Solution

The fourth proportional to 90,912.31, 136,389.12 and 27,738.08 is: 41,613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,912.31 : 136,389.12 = 27,738.08 : x
  2. Step 2: Convert to fraction form
    90,912.31/136,389.12 = 27,738.08/x
  3. Step 3: Cross multiply
    90,912.31x = 136,389.12 × 27,738.08
  4. Step 4: Simplify right side
    90,912.31x = 3,783,172,047.19
  5. Step 5: Solve for x
    x = 3,783,172,047.19/90,912.31
  6. Step 6: Final answer
    x = 41,613.42

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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.