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Finding the Fourth Proportional to 103,491.49, 155,297.46 and 43,515.62

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Solution

The fourth proportional to 103,491.49, 155,297.46 and 43,515.62 is: 65,298.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,491.49 : 155,297.46 = 43,515.62 : x
  2. Step 2: Convert to fraction form
    103,491.49/155,297.46 = 43,515.62/x
  3. Step 3: Cross multiply
    103,491.49x = 155,297.46 × 43,515.62
  4. Step 4: Simplify right side
    103,491.49x = 6,757,865,107.35
  5. Step 5: Solve for x
    x = 6,757,865,107.35/103,491.49
  6. Step 6: Final answer
    x = 65,298.75

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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.