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Finding the Fourth Proportional to 68,603.10, 102,912.03 and 21,845.04

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Solution

The fourth proportional to 68,603.10, 102,912.03 and 21,845.04 is: 32,769.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,603.10 : 102,912.03 = 21,845.04 : x
  2. Step 2: Convert to fraction form
    68,603.10/102,912.03 = 21,845.04/x
  3. Step 3: Cross multiply
    68,603.10x = 102,912.03 × 21,845.04
  4. Step 4: Simplify right side
    68,603.10x = 2,248,117,411.83
  5. Step 5: Solve for x
    x = 2,248,117,411.83/68,603.10
  6. Step 6: Final answer
    x = 32,769.91

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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.