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Finding the Fourth Proportional to 103,635.98, 155,535.98 and 40,486.35

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Solution

The fourth proportional to 103,635.98, 155,535.98 and 40,486.35 is: 60,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.98 : 155,535.98 = 40,486.35 : x
  2. Step 2: Convert to fraction form
    103,635.98/155,535.98 = 40,486.35/x
  3. Step 3: Cross multiply
    103,635.98x = 155,535.98 × 40,486.35
  4. Step 4: Simplify right side
    103,635.98x = 6,297,083,921.44
  5. Step 5: Solve for x
    x = 6,297,083,921.44/103,635.98
  6. Step 6: Final answer
    x = 60,761.56

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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.