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Finding the Fourth Proportional to 103,632.53, 155,448.78 and 28,752.68

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Solution

The fourth proportional to 103,632.53, 155,448.78 and 28,752.68 is: 43,129.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,632.53 : 155,448.78 = 28,752.68 : x
  2. Step 2: Convert to fraction form
    103,632.53/155,448.78 = 28,752.68/x
  3. Step 3: Cross multiply
    103,632.53x = 155,448.78 × 28,752.68
  4. Step 4: Simplify right side
    103,632.53x = 4,469,569,027.73
  5. Step 5: Solve for x
    x = 4,469,569,027.73/103,632.53
  6. Step 6: Final answer
    x = 43,129.02

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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.