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Finding the Fourth Proportional to 56,161.16, 84,232.06 and 18,717

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Solution

The fourth proportional to 56,161.16, 84,232.06 and 18,717 is: 28,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,161.16 : 84,232.06 = 18,717 : x
  2. Step 2: Convert to fraction form
    56,161.16/84,232.06 = 18,717/x
  3. Step 3: Cross multiply
    56,161.16x = 84,232.06 × 18,717
  4. Step 4: Simplify right side
    56,161.16x = 1,576,571,467.02
  5. Step 5: Solve for x
    x = 1,576,571,467.02/56,161.16
  6. Step 6: Final answer
    x = 28,072.27

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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.