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Finding the Fourth Proportional to 78,550.41, 117,893.52 and 41,136.66

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Solution

The fourth proportional to 78,550.41, 117,893.52 and 41,136.66 is: 61,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,550.41 : 117,893.52 = 41,136.66 : x
  2. Step 2: Convert to fraction form
    78,550.41/117,893.52 = 41,136.66/x
  3. Step 3: Cross multiply
    78,550.41x = 117,893.52 × 41,136.66
  4. Step 4: Simplify right side
    78,550.41x = 4,849,745,648.44
  5. Step 5: Solve for x
    x = 4,849,745,648.44/78,550.41
  6. Step 6: Final answer
    x = 61,740.55

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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.