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Finding the Fourth Proportional to 103,625.60, 155,447.18 and 28,745.74

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Solution

The fourth proportional to 103,625.60, 155,447.18 and 28,745.74 is: 43,121.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,625.60 : 155,447.18 = 28,745.74 : x
  2. Step 2: Convert to fraction form
    103,625.60/155,447.18 = 28,745.74/x
  3. Step 3: Cross multiply
    103,625.60x = 155,447.18 × 28,745.74
  4. Step 4: Simplify right side
    103,625.60x = 4,468,444,220.01
  5. Step 5: Solve for x
    x = 4,468,444,220.01/103,625.60
  6. Step 6: Final answer
    x = 43,121.05

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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.