Home / 43,840.20-65,717.10-21,635.40

Finding the Fourth Proportional to 43,840.20, 65,717.10 and 21,635.40

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Solution

The fourth proportional to 43,840.20, 65,717.10 and 21,635.40 is: 32,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,840.20 : 65,717.10 = 21,635.40 : x
  2. Step 2: Convert to fraction form
    43,840.20/65,717.10 = 21,635.40/x
  3. Step 3: Cross multiply
    43,840.20x = 65,717.10 × 21,635.40
  4. Step 4: Simplify right side
    43,840.20x = 1,421,815,745.34
  5. Step 5: Solve for x
    x = 1,421,815,745.34/43,840.20
  6. Step 6: Final answer
    x = 32,431.78

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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.