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Finding the Fourth Proportional to 74,845.44, 112,267.74 and 18,685.44

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Solution

The fourth proportional to 74,845.44, 112,267.74 and 18,685.44 is: 28,028.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,845.44 : 112,267.74 = 18,685.44 : x
  2. Step 2: Convert to fraction form
    74,845.44/112,267.74 = 18,685.44/x
  3. Step 3: Cross multiply
    74,845.44x = 112,267.74 × 18,685.44
  4. Step 4: Simplify right side
    74,845.44x = 2,097,772,119.71
  5. Step 5: Solve for x
    x = 2,097,772,119.71/74,845.44
  6. Step 6: Final answer
    x = 28,028.06

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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.