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Finding the Fourth Proportional to 68,781.76, 94,902.24 and 43,622.08

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Solution

The fourth proportional to 68,781.76, 94,902.24 and 43,622.08 is: 60,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,781.76 : 94,902.24 = 43,622.08 : x
  2. Step 2: Convert to fraction form
    68,781.76/94,902.24 = 43,622.08/x
  3. Step 3: Cross multiply
    68,781.76x = 94,902.24 × 43,622.08
  4. Step 4: Simplify right side
    68,781.76x = 4,139,833,105.46
  5. Step 5: Solve for x
    x = 4,139,833,105.46/68,781.76
  6. Step 6: Final answer
    x = 60,187.95

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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.