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Finding the Fourth Proportional to 35,481.78, 53,222.67 and 12,108.42

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Solution

The fourth proportional to 35,481.78, 53,222.67 and 12,108.42 is: 18,162.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,481.78 : 53,222.67 = 12,108.42 : x
  2. Step 2: Convert to fraction form
    35,481.78/53,222.67 = 12,108.42/x
  3. Step 3: Cross multiply
    35,481.78x = 53,222.67 × 12,108.42
  4. Step 4: Simplify right side
    35,481.78x = 644,442,441.88
  5. Step 5: Solve for x
    x = 644,442,441.88/35,481.78
  6. Step 6: Final answer
    x = 18,162.63

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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.