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Finding the Fourth Proportional to 68,605.60, 102,908.40 and 27,047.20

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Solution

The fourth proportional to 68,605.60, 102,908.40 and 27,047.20 is: 40,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,605.60 : 102,908.40 = 27,047.20 : x
  2. Step 2: Convert to fraction form
    68,605.60/102,908.40 = 27,047.20/x
  3. Step 3: Cross multiply
    68,605.60x = 102,908.40 × 27,047.20
  4. Step 4: Simplify right side
    68,605.60x = 2,783,384,076.48
  5. Step 5: Solve for x
    x = 2,783,384,076.48/68,605.60
  6. Step 6: Final answer
    x = 40,570.80

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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.