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Finding the Fourth Proportional to 111,038.60, 166,582.20 and 54,905.60

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Solution

The fourth proportional to 111,038.60, 166,582.20 and 54,905.60 is: 82,370.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,038.60 : 166,582.20 = 54,905.60 : x
  2. Step 2: Convert to fraction form
    111,038.60/166,582.20 = 54,905.60/x
  3. Step 3: Cross multiply
    111,038.60x = 166,582.20 × 54,905.60
  4. Step 4: Simplify right side
    111,038.60x = 9,146,295,640.32
  5. Step 5: Solve for x
    x = 9,146,295,640.32/111,038.60
  6. Step 6: Final answer
    x = 82,370.42

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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.