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Finding the Fourth Proportional to 110,630.40, 165,945.60 and 31,747.20

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Solution

The fourth proportional to 110,630.40, 165,945.60 and 31,747.20 is: 47,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,630.40 : 165,945.60 = 31,747.20 : x
  2. Step 2: Convert to fraction form
    110,630.40/165,945.60 = 31,747.20/x
  3. Step 3: Cross multiply
    110,630.40x = 165,945.60 × 31,747.20
  4. Step 4: Simplify right side
    110,630.40x = 5,268,308,152.32
  5. Step 5: Solve for x
    x = 5,268,308,152.32/110,630.40
  6. Step 6: Final answer
    x = 47,620.80

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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.