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Finding the Fourth Proportional to 80,053.38, 110,390.58 and 68,760

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Solution

The fourth proportional to 80,053.38, 110,390.58 and 68,760 is: 94,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,053.38 : 110,390.58 = 68,760 : x
  2. Step 2: Convert to fraction form
    80,053.38/110,390.58 = 68,760/x
  3. Step 3: Cross multiply
    80,053.38x = 110,390.58 × 68,760
  4. Step 4: Simplify right side
    80,053.38x = 7,590,456,280.80
  5. Step 5: Solve for x
    x = 7,590,456,280.80/80,053.38
  6. Step 6: Final answer
    x = 94,817.44

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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.