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Finding the Fourth Proportional to 32,911.40, 49,367.10 and 21,247.40

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Solution

The fourth proportional to 32,911.40, 49,367.10 and 21,247.40 is: 31,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,911.40 : 49,367.10 = 21,247.40 : x
  2. Step 2: Convert to fraction form
    32,911.40/49,367.10 = 21,247.40/x
  3. Step 3: Cross multiply
    32,911.40x = 49,367.10 × 21,247.40
  4. Step 4: Simplify right side
    32,911.40x = 1,048,922,520.54
  5. Step 5: Solve for x
    x = 1,048,922,520.54/32,911.40
  6. Step 6: Final answer
    x = 31,871.10

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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.