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Finding the Fourth Proportional to 49,975.62, 74,941.56 and 18,789

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Solution

The fourth proportional to 49,975.62, 74,941.56 and 18,789 is: 28,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,975.62 : 74,941.56 = 18,789 : x
  2. Step 2: Convert to fraction form
    49,975.62/74,941.56 = 18,789/x
  3. Step 3: Cross multiply
    49,975.62x = 74,941.56 × 18,789
  4. Step 4: Simplify right side
    49,975.62x = 1,408,076,970.84
  5. Step 5: Solve for x
    x = 1,408,076,970.84/49,975.62
  6. Step 6: Final answer
    x = 28,175.28

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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.