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Finding the Fourth Proportional to 68,235.84, 94,167.36 and 39,942.72

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Solution

The fourth proportional to 68,235.84, 94,167.36 and 39,942.72 is: 55,122.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,235.84 : 94,167.36 = 39,942.72 : x
  2. Step 2: Convert to fraction form
    68,235.84/94,167.36 = 39,942.72/x
  3. Step 3: Cross multiply
    68,235.84x = 94,167.36 × 39,942.72
  4. Step 4: Simplify right side
    68,235.84x = 3,761,300,493.62
  5. Step 5: Solve for x
    x = 3,761,300,493.62/68,235.84
  6. Step 6: Final answer
    x = 55,122.07

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1.5x scale

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.