Home / 91,379.76-137,068.20-29,049.36

Finding the Fourth Proportional to 91,379.76, 137,068.20 and 29,049.36

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Solution

The fourth proportional to 91,379.76, 137,068.20 and 29,049.36 is: 43,573.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,379.76 : 137,068.20 = 29,049.36 : x
  2. Step 2: Convert to fraction form
    91,379.76/137,068.20 = 29,049.36/x
  3. Step 3: Cross multiply
    91,379.76x = 137,068.20 × 29,049.36
  4. Step 4: Simplify right side
    91,379.76x = 3,981,743,486.35
  5. Step 5: Solve for x
    x = 3,981,743,486.35/91,379.76
  6. Step 6: Final answer
    x = 43,573.58

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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.