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Finding the Fourth Proportional to 103,651.62, 155,480.67 and 28,772.52

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Solution

The fourth proportional to 103,651.62, 155,480.67 and 28,772.52 is: 43,159.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,651.62 : 155,480.67 = 28,772.52 : x
  2. Step 2: Convert to fraction form
    103,651.62/155,480.67 = 28,772.52/x
  3. Step 3: Cross multiply
    103,651.62x = 155,480.67 × 28,772.52
  4. Step 4: Simplify right side
    103,651.62x = 4,473,570,687.19
  5. Step 5: Solve for x
    x = 4,473,570,687.19/103,651.62
  6. Step 6: Final answer
    x = 43,159.68

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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.