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Finding the Fourth Proportional to 103,627.78, 155,441.70 and 28,766.77

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Solution

The fourth proportional to 103,627.78, 155,441.70 and 28,766.77 is: 43,150.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,627.78 : 155,441.70 = 28,766.77 : x
  2. Step 2: Convert to fraction form
    103,627.78/155,441.70 = 28,766.77/x
  3. Step 3: Cross multiply
    103,627.78x = 155,441.70 × 28,766.77
  4. Step 4: Simplify right side
    103,627.78x = 4,471,555,632.31
  5. Step 5: Solve for x
    x = 4,471,555,632.31/103,627.78
  6. Step 6: Final answer
    x = 43,150.16

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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.