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Finding the Fourth Proportional to 60,676.80, 91,008.68 and 21,234.64

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Solution

The fourth proportional to 60,676.80, 91,008.68 and 21,234.64 is: 31,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,676.80 : 91,008.68 = 21,234.64 : x
  2. Step 2: Convert to fraction form
    60,676.80/91,008.68 = 21,234.64/x
  3. Step 3: Cross multiply
    60,676.80x = 91,008.68 × 21,234.64
  4. Step 4: Simplify right side
    60,676.80x = 1,932,536,556.68
  5. Step 5: Solve for x
    x = 1,932,536,556.68/60,676.80
  6. Step 6: Final answer
    x = 31,849.68

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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.