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Finding the Fourth Proportional to 56,108.72, 84,103.99 and 18,658.73

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Solution

The fourth proportional to 56,108.72, 84,103.99 and 18,658.73 is: 27,968.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,108.72 : 84,103.99 = 18,658.73 : x
  2. Step 2: Convert to fraction form
    56,108.72/84,103.99 = 18,658.73/x
  3. Step 3: Cross multiply
    56,108.72x = 84,103.99 × 18,658.73
  4. Step 4: Simplify right side
    56,108.72x = 1,569,273,641.33
  5. Step 5: Solve for x
    x = 1,569,273,641.33/56,108.72
  6. Step 6: Final answer
    x = 27,968.44

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1.5x scale

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.