Home / 91,139.12-136,728.92-27,968

Finding the Fourth Proportional to 91,139.12, 136,728.92 and 27,968

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Solution

The fourth proportional to 91,139.12, 136,728.92 and 27,968 is: 41,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,139.12 : 136,728.92 = 27,968 : x
  2. Step 2: Convert to fraction form
    91,139.12/136,728.92 = 27,968/x
  3. Step 3: Cross multiply
    91,139.12x = 136,728.92 × 27,968
  4. Step 4: Simplify right side
    91,139.12x = 3,824,034,434.56
  5. Step 5: Solve for x
    x = 3,824,034,434.56/91,139.12
  6. Step 6: Final answer
    x = 41,958.21

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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.