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Finding the Fourth Proportional to 75,274.32, 112,902.84 and 19,874.64

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Solution

The fourth proportional to 75,274.32, 112,902.84 and 19,874.64 is: 29,809.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,274.32 : 112,902.84 = 19,874.64 : x
  2. Step 2: Convert to fraction form
    75,274.32/112,902.84 = 19,874.64/x
  3. Step 3: Cross multiply
    75,274.32x = 112,902.84 × 19,874.64
  4. Step 4: Simplify right side
    75,274.32x = 2,243,903,299.98
  5. Step 5: Solve for x
    x = 2,243,903,299.98/75,274.32
  6. Step 6: Final answer
    x = 29,809.68

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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.