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Finding the Fourth Proportional to 56,612, 84,918 and 19,676

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Solution

The fourth proportional to 56,612, 84,918 and 19,676 is: 29,514

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,612 : 84,918 = 19,676 : x
  2. Step 2: Convert to fraction form
    56,612/84,918 = 19,676/x
  3. Step 3: Cross multiply
    56,612x = 84,918 × 19,676
  4. Step 4: Simplify right side
    56,612x = 1,670,846,568
  5. Step 5: Solve for x
    x = 1,670,846,568/56,612
  6. Step 6: Final answer
    x = 29,514

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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.