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Finding the Fourth Proportional to 68,809.03, 94,934.03 and 40,122.20

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Solution

The fourth proportional to 68,809.03, 94,934.03 and 40,122.20 is: 55,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,809.03 : 94,934.03 = 40,122.20 : x
  2. Step 2: Convert to fraction form
    68,809.03/94,934.03 = 40,122.20/x
  3. Step 3: Cross multiply
    68,809.03x = 94,934.03 × 40,122.20
  4. Step 4: Simplify right side
    68,809.03x = 3,808,962,138.47
  5. Step 5: Solve for x
    x = 3,808,962,138.47/68,809.03
  6. Step 6: Final answer
    x = 55,355.56

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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.