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Finding the Fourth Proportional to 43,193.66, 64,775.70 and 20,992.77

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Solution

The fourth proportional to 43,193.66, 64,775.70 and 20,992.77 is: 31,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,193.66 : 64,775.70 = 20,992.77 : x
  2. Step 2: Convert to fraction form
    43,193.66/64,775.70 = 20,992.77/x
  3. Step 3: Cross multiply
    43,193.66x = 64,775.70 × 20,992.77
  4. Step 4: Simplify right side
    43,193.66x = 1,359,821,371.69
  5. Step 5: Solve for x
    x = 1,359,821,371.69/43,193.66
  6. Step 6: Final answer
    x = 31,481.97

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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.