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Finding the Fourth Proportional to 63,361, 87,438.18 and 36,865

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Solution

The fourth proportional to 63,361, 87,438.18 and 36,865 is: 50,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,361 : 87,438.18 = 36,865 : x
  2. Step 2: Convert to fraction form
    63,361/87,438.18 = 36,865/x
  3. Step 3: Cross multiply
    63,361x = 87,438.18 × 36,865
  4. Step 4: Simplify right side
    63,361x = 3,223,408,505.70
  5. Step 5: Solve for x
    x = 3,223,408,505.70/63,361
  6. Step 6: Final answer
    x = 50,873.70

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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.