Home / 91,815.09-137,427.38-47,381.33

Finding the Fourth Proportional to 91,815.09, 137,427.38 and 47,381.33

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Solution

The fourth proportional to 91,815.09, 137,427.38 and 47,381.33 is: 70,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,815.09 : 137,427.38 = 47,381.33 : x
  2. Step 2: Convert to fraction form
    91,815.09/137,427.38 = 47,381.33/x
  3. Step 3: Cross multiply
    91,815.09x = 137,427.38 × 47,381.33
  4. Step 4: Simplify right side
    91,815.09x = 6,511,491,118.77
  5. Step 5: Solve for x
    x = 6,511,491,118.77/91,815.09
  6. Step 6: Final answer
    x = 70,919.62

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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.