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Finding the Fourth Proportional to 80,377.76, 119,808.46 and 74,396.72

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Solution

The fourth proportional to 80,377.76, 119,808.46 and 74,396.72 is: 110,893.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,377.76 : 119,808.46 = 74,396.72 : x
  2. Step 2: Convert to fraction form
    80,377.76/119,808.46 = 74,396.72/x
  3. Step 3: Cross multiply
    80,377.76x = 119,808.46 × 74,396.72
  4. Step 4: Simplify right side
    80,377.76x = 8,913,356,452.25
  5. Step 5: Solve for x
    x = 8,913,356,452.25/80,377.76
  6. Step 6: Final answer
    x = 110,893.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.