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Finding the Fourth Proportional to 68,812.80, 94,963.20 and 41,956.80

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Solution

The fourth proportional to 68,812.80, 94,963.20 and 41,956.80 is: 57,901.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,812.80 : 94,963.20 = 41,956.80 : x
  2. Step 2: Convert to fraction form
    68,812.80/94,963.20 = 41,956.80/x
  3. Step 3: Cross multiply
    68,812.80x = 94,963.20 × 41,956.80
  4. Step 4: Simplify right side
    68,812.80x = 3,984,351,989.76
  5. Step 5: Solve for x
    x = 3,984,351,989.76/68,812.80
  6. Step 6: Final answer
    x = 57,901.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.