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Finding the Fourth Proportional to 47,576.48, 71,408 and 21,276.32

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Solution

The fourth proportional to 47,576.48, 71,408 and 21,276.32 is: 31,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,576.48 : 71,408 = 21,276.32 : x
  2. Step 2: Convert to fraction form
    47,576.48/71,408 = 21,276.32/x
  3. Step 3: Cross multiply
    47,576.48x = 71,408 × 21,276.32
  4. Step 4: Simplify right side
    47,576.48x = 1,519,299,458.56
  5. Step 5: Solve for x
    x = 1,519,299,458.56/47,576.48
  6. Step 6: Final answer
    x = 31,933.83

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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.