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Finding the Fourth Proportional to 45,411.44, 68,072.98 and 21,712.82

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Solution

The fourth proportional to 45,411.44, 68,072.98 and 21,712.82 is: 32,548.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,411.44 : 68,072.98 = 21,712.82 : x
  2. Step 2: Convert to fraction form
    45,411.44/68,072.98 = 21,712.82/x
  3. Step 3: Cross multiply
    45,411.44x = 68,072.98 × 21,712.82
  4. Step 4: Simplify right side
    45,411.44x = 1,478,056,361.60
  5. Step 5: Solve for x
    x = 1,478,056,361.60/45,411.44
  6. Step 6: Final answer
    x = 32,548.11

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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.