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Finding the Fourth Proportional to 103,073.82, 154,571.85 and 43,872.54

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Solution

The fourth proportional to 103,073.82, 154,571.85 and 43,872.54 is: 65,792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,073.82 : 154,571.85 = 43,872.54 : x
  2. Step 2: Convert to fraction form
    103,073.82/154,571.85 = 43,872.54/x
  3. Step 3: Cross multiply
    103,073.82x = 154,571.85 × 43,872.54
  4. Step 4: Simplify right side
    103,073.82x = 6,781,459,672.00
  5. Step 5: Solve for x
    x = 6,781,459,672.00/103,073.82
  6. Step 6: Final answer
    x = 65,792.26

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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.