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Finding the Fourth Proportional to 63,374.44, 87,463.38 and 47,431

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Solution

The fourth proportional to 63,374.44, 87,463.38 and 47,431 is: 65,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,374.44 : 87,463.38 = 47,431 : x
  2. Step 2: Convert to fraction form
    63,374.44/87,463.38 = 47,431/x
  3. Step 3: Cross multiply
    63,374.44x = 87,463.38 × 47,431
  4. Step 4: Simplify right side
    63,374.44x = 4,148,475,576.78
  5. Step 5: Solve for x
    x = 4,148,475,576.78/63,374.44
  6. Step 6: Final answer
    x = 65,459.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.