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Finding the Fourth Proportional to 72,023.36, 108,041.52 and 36,940.64

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Solution

The fourth proportional to 72,023.36, 108,041.52 and 36,940.64 is: 55,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,023.36 : 108,041.52 = 36,940.64 : x
  2. Step 2: Convert to fraction form
    72,023.36/108,041.52 = 36,940.64/x
  3. Step 3: Cross multiply
    72,023.36x = 108,041.52 × 36,940.64
  4. Step 4: Simplify right side
    72,023.36x = 3,991,122,895.37
  5. Step 5: Solve for x
    x = 3,991,122,895.37/72,023.36
  6. Step 6: Final answer
    x = 55,414.28

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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.