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Finding the Fourth Proportional to 103,855.26, 155,716.32 and 43,867.49

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Solution

The fourth proportional to 103,855.26, 155,716.32 and 43,867.49 is: 65,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.26 : 155,716.32 = 43,867.49 : x
  2. Step 2: Convert to fraction form
    103,855.26/155,716.32 = 43,867.49/x
  3. Step 3: Cross multiply
    103,855.26x = 155,716.32 × 43,867.49
  4. Step 4: Simplify right side
    103,855.26x = 6,830,883,331.86
  5. Step 5: Solve for x
    x = 6,830,883,331.86/103,855.26
  6. Step 6: Final answer
    x = 65,773.11

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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.