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Finding the Fourth Proportional to 114,578.40, 171,867.60 and 31,480.80

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Solution

The fourth proportional to 114,578.40, 171,867.60 and 31,480.80 is: 47,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,578.40 : 171,867.60 = 31,480.80 : x
  2. Step 2: Convert to fraction form
    114,578.40/171,867.60 = 31,480.80/x
  3. Step 3: Cross multiply
    114,578.40x = 171,867.60 × 31,480.80
  4. Step 4: Simplify right side
    114,578.40x = 5,410,529,542.08
  5. Step 5: Solve for x
    x = 5,410,529,542.08/114,578.40
  6. Step 6: Final answer
    x = 47,221.20

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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.