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Finding the Fourth Proportional to 80,889.80, 121,328.78 and 27,577.38

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Solution

The fourth proportional to 80,889.80, 121,328.78 and 27,577.38 is: 41,364.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,889.80 : 121,328.78 = 27,577.38 : x
  2. Step 2: Convert to fraction form
    80,889.80/121,328.78 = 27,577.38/x
  3. Step 3: Cross multiply
    80,889.80x = 121,328.78 × 27,577.38
  4. Step 4: Simplify right side
    80,889.80x = 3,345,929,871.00
  5. Step 5: Solve for x
    x = 3,345,929,871.00/80,889.80
  6. Step 6: Final answer
    x = 41,364.05

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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.