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Finding the Fourth Proportional to 128,792.44, 193,200.94 and 40,022.04

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Solution

The fourth proportional to 128,792.44, 193,200.94 and 40,022.04 is: 60,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,792.44 : 193,200.94 = 40,022.04 : x
  2. Step 2: Convert to fraction form
    128,792.44/193,200.94 = 40,022.04/x
  3. Step 3: Cross multiply
    128,792.44x = 193,200.94 × 40,022.04
  4. Step 4: Simplify right side
    128,792.44x = 7,732,295,748.72
  5. Step 5: Solve for x
    x = 7,732,295,748.72/128,792.44
  6. Step 6: Final answer
    x = 60,036.88

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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.