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Finding the Fourth Proportional to 43,676.43, 65,493.99 and 19,977.05

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Solution

The fourth proportional to 43,676.43, 65,493.99 and 19,977.05 is: 29,956.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,676.43 : 65,493.99 = 19,977.05 : x
  2. Step 2: Convert to fraction form
    43,676.43/65,493.99 = 19,977.05/x
  3. Step 3: Cross multiply
    43,676.43x = 65,493.99 × 19,977.05
  4. Step 4: Simplify right side
    43,676.43x = 1,308,376,385.46
  5. Step 5: Solve for x
    x = 1,308,376,385.46/43,676.43
  6. Step 6: Final answer
    x = 29,956.12

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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.