Home / 91,338.10-137,020.82-28,152.97

Finding the Fourth Proportional to 91,338.10, 137,020.82 and 28,152.97

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Solution

The fourth proportional to 91,338.10, 137,020.82 and 28,152.97 is: 42,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,338.10 : 137,020.82 = 28,152.97 : x
  2. Step 2: Convert to fraction form
    91,338.10/137,020.82 = 28,152.97/x
  3. Step 3: Cross multiply
    91,338.10x = 137,020.82 × 28,152.97
  4. Step 4: Simplify right side
    91,338.10x = 3,857,542,551.52
  5. Step 5: Solve for x
    x = 3,857,542,551.52/91,338.10
  6. Step 6: Final answer
    x = 42,233.66

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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.