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Finding the Fourth Proportional to 80,092.98, 120,188.88 and 40,678.38

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Solution

The fourth proportional to 80,092.98, 120,188.88 and 40,678.38 is: 61,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,092.98 : 120,188.88 = 40,678.38 : x
  2. Step 2: Convert to fraction form
    80,092.98/120,188.88 = 40,678.38/x
  3. Step 3: Cross multiply
    80,092.98x = 120,188.88 × 40,678.38
  4. Step 4: Simplify right side
    80,092.98x = 4,889,088,932.41
  5. Step 5: Solve for x
    x = 4,889,088,932.41/80,092.98
  6. Step 6: Final answer
    x = 61,042.66

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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.