Home / 43,391.20-65,110.76-21,204.72

Finding the Fourth Proportional to 43,391.20, 65,110.76 and 21,204.72

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Solution

The fourth proportional to 43,391.20, 65,110.76 and 21,204.72 is: 31,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,391.20 : 65,110.76 = 21,204.72 : x
  2. Step 2: Convert to fraction form
    43,391.20/65,110.76 = 21,204.72/x
  3. Step 3: Cross multiply
    43,391.20x = 65,110.76 × 21,204.72
  4. Step 4: Simplify right side
    43,391.20x = 1,380,655,434.79
  5. Step 5: Solve for x
    x = 1,380,655,434.79/43,391.20
  6. Step 6: Final answer
    x = 31,818.79

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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.