Home / 43,660.20-65,447.10-21,455.40

Finding the Fourth Proportional to 43,660.20, 65,447.10 and 21,455.40

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Solution

The fourth proportional to 43,660.20, 65,447.10 and 21,455.40 is: 32,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,660.20 : 65,447.10 = 21,455.40 : x
  2. Step 2: Convert to fraction form
    43,660.20/65,447.10 = 21,455.40/x
  3. Step 3: Cross multiply
    43,660.20x = 65,447.10 × 21,455.40
  4. Step 4: Simplify right side
    43,660.20x = 1,404,193,709.34
  5. Step 5: Solve for x
    x = 1,404,193,709.34/43,660.20
  6. Step 6: Final answer
    x = 32,161.87

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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.