Home / 91,974.36-137,932.38-39,369.72

Finding the Fourth Proportional to 91,974.36, 137,932.38 and 39,369.72

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Solution

The fourth proportional to 91,974.36, 137,932.38 and 39,369.72 is: 59,042.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,974.36 : 137,932.38 = 39,369.72 : x
  2. Step 2: Convert to fraction form
    91,974.36/137,932.38 = 39,369.72/x
  3. Step 3: Cross multiply
    91,974.36x = 137,932.38 × 39,369.72
  4. Step 4: Simplify right side
    91,974.36x = 5,430,359,179.53
  5. Step 5: Solve for x
    x = 5,430,359,179.53/91,974.36
  6. Step 6: Final answer
    x = 59,042.10

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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.