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Finding the Fourth Proportional to 68,075.82, 102,090.81 and 28,625.58

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Solution

The fourth proportional to 68,075.82, 102,090.81 and 28,625.58 is: 42,928.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,075.82 : 102,090.81 = 28,625.58 : x
  2. Step 2: Convert to fraction form
    68,075.82/102,090.81 = 28,625.58/x
  3. Step 3: Cross multiply
    68,075.82x = 102,090.81 × 28,625.58
  4. Step 4: Simplify right side
    68,075.82x = 2,922,408,648.92
  5. Step 5: Solve for x
    x = 2,922,408,648.92/68,075.82
  6. Step 6: Final answer
    x = 42,928.73

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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.