Home / 75,136.62-103,689.78-41,145.12

Finding the Fourth Proportional to 75,136.62, 103,689.78 and 41,145.12

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Solution

The fourth proportional to 75,136.62, 103,689.78 and 41,145.12 is: 56,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.62 : 103,689.78 = 41,145.12 : x
  2. Step 2: Convert to fraction form
    75,136.62/103,689.78 = 41,145.12/x
  3. Step 3: Cross multiply
    75,136.62x = 103,689.78 × 41,145.12
  4. Step 4: Simplify right side
    75,136.62x = 4,266,328,440.87
  5. Step 5: Solve for x
    x = 4,266,328,440.87/75,136.62
  6. Step 6: Final answer
    x = 56,780.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.