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Finding the Fourth Proportional to 40,383.36, 55,730.34 and 22,236

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Solution

The fourth proportional to 40,383.36, 55,730.34 and 22,236 is: 30,686.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,383.36 : 55,730.34 = 22,236 : x
  2. Step 2: Convert to fraction form
    40,383.36/55,730.34 = 22,236/x
  3. Step 3: Cross multiply
    40,383.36x = 55,730.34 × 22,236
  4. Step 4: Simplify right side
    40,383.36x = 1,239,219,729.06
  5. Step 5: Solve for x
    x = 1,239,219,729.06/40,383.36
  6. Step 6: Final answer
    x = 30,686.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.