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Finding the Fourth Proportional to 31,401, 47,101.50 and 10,624.50

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Solution

The fourth proportional to 31,401, 47,101.50 and 10,624.50 is: 15,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,401 : 47,101.50 = 10,624.50 : x
  2. Step 2: Convert to fraction form
    31,401/47,101.50 = 10,624.50/x
  3. Step 3: Cross multiply
    31,401x = 47,101.50 × 10,624.50
  4. Step 4: Simplify right side
    31,401x = 500,429,886.75
  5. Step 5: Solve for x
    x = 500,429,886.75/31,401
  6. Step 6: Final answer
    x = 15,936.75

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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.