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Finding the Fourth Proportional to 91,537.39, 137,328 and 38,199.69

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Solution

The fourth proportional to 91,537.39, 137,328 and 38,199.69 is: 57,308.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,537.39 : 137,328 = 38,199.69 : x
  2. Step 2: Convert to fraction form
    91,537.39/137,328 = 38,199.69/x
  3. Step 3: Cross multiply
    91,537.39x = 137,328 × 38,199.69
  4. Step 4: Simplify right side
    91,537.39x = 5,245,887,028.32
  5. Step 5: Solve for x
    x = 5,245,887,028.32/91,537.39
  6. Step 6: Final answer
    x = 57,308.68

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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.