Home / 75,136.90-103,685.72-41,144.78

Finding the Fourth Proportional to 75,136.90, 103,685.72 and 41,144.78

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Solution

The fourth proportional to 75,136.90, 103,685.72 and 41,144.78 is: 56,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,136.90 : 103,685.72 = 41,144.78 : x
  2. Step 2: Convert to fraction form
    75,136.90/103,685.72 = 41,144.78/x
  3. Step 3: Cross multiply
    75,136.90x = 103,685.72 × 41,144.78
  4. Step 4: Simplify right side
    75,136.90x = 4,266,126,138.54
  5. Step 5: Solve for x
    x = 4,266,126,138.54/75,136.90
  6. Step 6: Final answer
    x = 56,778.04

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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.