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Finding the Fourth Proportional to 31,103.70, 46,641.48 and 8,911.98

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Solution

The fourth proportional to 31,103.70, 46,641.48 and 8,911.98 is: 13,363.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,103.70 : 46,641.48 = 8,911.98 : x
  2. Step 2: Convert to fraction form
    31,103.70/46,641.48 = 8,911.98/x
  3. Step 3: Cross multiply
    31,103.70x = 46,641.48 × 8,911.98
  4. Step 4: Simplify right side
    31,103.70x = 415,667,936.93
  5. Step 5: Solve for x
    x = 415,667,936.93/31,103.70
  6. Step 6: Final answer
    x = 13,363.94

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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.