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Finding the Fourth Proportional to 43,889.12, 65,750.76 and 21,676.56

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Solution

The fourth proportional to 43,889.12, 65,750.76 and 21,676.56 is: 32,473.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,889.12 : 65,750.76 = 21,676.56 : x
  2. Step 2: Convert to fraction form
    43,889.12/65,750.76 = 21,676.56/x
  3. Step 3: Cross multiply
    43,889.12x = 65,750.76 × 21,676.56
  4. Step 4: Simplify right side
    43,889.12x = 1,425,250,294.19
  5. Step 5: Solve for x
    x = 1,425,250,294.19/43,889.12
  6. Step 6: Final answer
    x = 32,473.89

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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.