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Finding the Fourth Proportional to 68,852.32, 103,278.48 and 22,138

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Solution

The fourth proportional to 68,852.32, 103,278.48 and 22,138 is: 33,207.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,852.32 : 103,278.48 = 22,138 : x
  2. Step 2: Convert to fraction form
    68,852.32/103,278.48 = 22,138/x
  3. Step 3: Cross multiply
    68,852.32x = 103,278.48 × 22,138
  4. Step 4: Simplify right side
    68,852.32x = 2,286,378,990.24
  5. Step 5: Solve for x
    x = 2,286,378,990.24/68,852.32
  6. Step 6: Final answer
    x = 33,207.00

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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.