Home / 91,245.07-136,872.47-28,920.43

Finding the Fourth Proportional to 91,245.07, 136,872.47 and 28,920.43

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Solution

The fourth proportional to 91,245.07, 136,872.47 and 28,920.43 is: 43,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,245.07 : 136,872.47 = 28,920.43 : x
  2. Step 2: Convert to fraction form
    91,245.07/136,872.47 = 28,920.43/x
  3. Step 3: Cross multiply
    91,245.07x = 136,872.47 × 28,920.43
  4. Step 4: Simplify right side
    91,245.07x = 3,958,410,687.56
  5. Step 5: Solve for x
    x = 3,958,410,687.56/91,245.07
  6. Step 6: Final answer
    x = 43,382.19

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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.