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Finding the Fourth Proportional to 50,070, 69,112 and 28,863.44

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Solution

The fourth proportional to 50,070, 69,112 and 28,863.44 is: 39,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,070 : 69,112 = 28,863.44 : x
  2. Step 2: Convert to fraction form
    50,070/69,112 = 28,863.44/x
  3. Step 3: Cross multiply
    50,070x = 69,112 × 28,863.44
  4. Step 4: Simplify right side
    50,070x = 1,994,810,065.28
  5. Step 5: Solve for x
    x = 1,994,810,065.28/50,070
  6. Step 6: Final answer
    x = 39,840.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.