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Finding the Fourth Proportional to 80,620.54, 120,948.96 and 27,309.51

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Solution

The fourth proportional to 80,620.54, 120,948.96 and 27,309.51 is: 40,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.54 : 120,948.96 = 27,309.51 : x
  2. Step 2: Convert to fraction form
    80,620.54/120,948.96 = 27,309.51/x
  3. Step 3: Cross multiply
    80,620.54x = 120,948.96 × 27,309.51
  4. Step 4: Simplify right side
    80,620.54x = 3,303,056,832.61
  5. Step 5: Solve for x
    x = 3,303,056,832.61/80,620.54
  6. Step 6: Final answer
    x = 40,970.41

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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.