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Finding the Fourth Proportional to 68,008.60, 102,012.90 and 50,512.60

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Solution

The fourth proportional to 68,008.60, 102,012.90 and 50,512.60 is: 75,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,008.60 : 102,012.90 = 50,512.60 : x
  2. Step 2: Convert to fraction form
    68,008.60/102,012.90 = 50,512.60/x
  3. Step 3: Cross multiply
    68,008.60x = 102,012.90 × 50,512.60
  4. Step 4: Simplify right side
    68,008.60x = 5,152,936,812.54
  5. Step 5: Solve for x
    x = 5,152,936,812.54/68,008.60
  6. Step 6: Final answer
    x = 75,768.90

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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.