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Finding the Fourth Proportional to 103,620.90, 155,354.55 and 44,408.10

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Solution

The fourth proportional to 103,620.90, 155,354.55 and 44,408.10 is: 66,579.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.90 : 155,354.55 = 44,408.10 : x
  2. Step 2: Convert to fraction form
    103,620.90/155,354.55 = 44,408.10/x
  3. Step 3: Cross multiply
    103,620.90x = 155,354.55 × 44,408.10
  4. Step 4: Simplify right side
    103,620.90x = 6,899,000,391.86
  5. Step 5: Solve for x
    x = 6,899,000,391.86/103,620.90
  6. Step 6: Final answer
    x = 66,579.24

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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.