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Finding the Fourth Proportional to 74,587.60, 111,942.60 and 74,004.40

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Solution

The fourth proportional to 74,587.60, 111,942.60 and 74,004.40 is: 111,067.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,587.60 : 111,942.60 = 74,004.40 : x
  2. Step 2: Convert to fraction form
    74,587.60/111,942.60 = 74,004.40/x
  3. Step 3: Cross multiply
    74,587.60x = 111,942.60 × 74,004.40
  4. Step 4: Simplify right side
    74,587.60x = 8,284,244,947.44
  5. Step 5: Solve for x
    x = 8,284,244,947.44/74,587.60
  6. Step 6: Final answer
    x = 111,067.32

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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.