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Finding the Fourth Proportional to 68,662.70, 102,994.05 and 29,221.10

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Solution

The fourth proportional to 68,662.70, 102,994.05 and 29,221.10 is: 43,831.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,662.70 : 102,994.05 = 29,221.10 : x
  2. Step 2: Convert to fraction form
    68,662.70/102,994.05 = 29,221.10/x
  3. Step 3: Cross multiply
    68,662.70x = 102,994.05 × 29,221.10
  4. Step 4: Simplify right side
    68,662.70x = 3,009,599,434.46
  5. Step 5: Solve for x
    x = 3,009,599,434.46/68,662.70
  6. Step 6: Final answer
    x = 43,831.65

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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.