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Finding the Fourth Proportional to 89,694.34, 123,791.79 and 68,148.74

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Solution

The fourth proportional to 89,694.34, 123,791.79 and 68,148.74 is: 94,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,694.34 : 123,791.79 = 68,148.74 : x
  2. Step 2: Convert to fraction form
    89,694.34/123,791.79 = 68,148.74/x
  3. Step 3: Cross multiply
    89,694.34x = 123,791.79 × 68,148.74
  4. Step 4: Simplify right side
    89,694.34x = 8,436,255,075.88
  5. Step 5: Solve for x
    x = 8,436,255,075.88/89,694.34
  6. Step 6: Final answer
    x = 94,055.60

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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.