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Finding the Fourth Proportional to 40,542.80, 60,792.60 and 17,142.80

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Solution

The fourth proportional to 40,542.80, 60,792.60 and 17,142.80 is: 25,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,542.80 : 60,792.60 = 17,142.80 : x
  2. Step 2: Convert to fraction form
    40,542.80/60,792.60 = 17,142.80/x
  3. Step 3: Cross multiply
    40,542.80x = 60,792.60 × 17,142.80
  4. Step 4: Simplify right side
    40,542.80x = 1,042,155,383.28
  5. Step 5: Solve for x
    x = 1,042,155,383.28/40,542.80
  6. Step 6: Final answer
    x = 25,705.07

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1.5x scale

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.