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Finding the Fourth Proportional to 91,936.60, 137,806.80 and 52,408.60

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Solution

The fourth proportional to 91,936.60, 137,806.80 and 52,408.60 is: 78,556.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,936.60 : 137,806.80 = 52,408.60 : x
  2. Step 2: Convert to fraction form
    91,936.60/137,806.80 = 52,408.60/x
  3. Step 3: Cross multiply
    91,936.60x = 137,806.80 × 52,408.60
  4. Step 4: Simplify right side
    91,936.60x = 7,222,261,458.48
  5. Step 5: Solve for x
    x = 7,222,261,458.48/91,936.60
  6. Step 6: Final answer
    x = 78,556.98

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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.