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Finding the Fourth Proportional to 91,424.89, 137,137.34 and 38,797.47

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Solution

The fourth proportional to 91,424.89, 137,137.34 and 38,797.47 is: 58,196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.89 : 137,137.34 = 38,797.47 : x
  2. Step 2: Convert to fraction form
    91,424.89/137,137.34 = 38,797.47/x
  3. Step 3: Cross multiply
    91,424.89x = 137,137.34 × 38,797.47
  4. Step 4: Simplify right side
    91,424.89x = 5,320,581,834.53
  5. Step 5: Solve for x
    x = 5,320,581,834.53/91,424.89
  6. Step 6: Final answer
    x = 58,196.21

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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.