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Finding the Fourth Proportional to 103,622.92, 155,418.91 and 28,735.24

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Solution

The fourth proportional to 103,622.92, 155,418.91 and 28,735.24 is: 43,098.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,622.92 : 155,418.91 = 28,735.24 : x
  2. Step 2: Convert to fraction form
    103,622.92/155,418.91 = 28,735.24/x
  3. Step 3: Cross multiply
    103,622.92x = 155,418.91 × 28,735.24
  4. Step 4: Simplify right side
    103,622.92x = 4,465,999,679.39
  5. Step 5: Solve for x
    x = 4,465,999,679.39/103,622.92
  6. Step 6: Final answer
    x = 43,098.57

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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.