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Finding the Fourth Proportional to 111,110.40, 166,665.60 and 28,004.40

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Solution

The fourth proportional to 111,110.40, 166,665.60 and 28,004.40 is: 42,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,110.40 : 166,665.60 = 28,004.40 : x
  2. Step 2: Convert to fraction form
    111,110.40/166,665.60 = 28,004.40/x
  3. Step 3: Cross multiply
    111,110.40x = 166,665.60 × 28,004.40
  4. Step 4: Simplify right side
    111,110.40x = 4,667,370,128.64
  5. Step 5: Solve for x
    x = 4,667,370,128.64/111,110.40
  6. Step 6: Final answer
    x = 42,006.60

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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.