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Finding the Fourth Proportional to 68,205.84, 94,124.36 and 39,906.08

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Solution

The fourth proportional to 68,205.84, 94,124.36 and 39,906.08 is: 55,070.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,205.84 : 94,124.36 = 39,906.08 : x
  2. Step 2: Convert to fraction form
    68,205.84/94,124.36 = 39,906.08/x
  3. Step 3: Cross multiply
    68,205.84x = 94,124.36 × 39,906.08
  4. Step 4: Simplify right side
    68,205.84x = 3,756,134,240.11
  5. Step 5: Solve for x
    x = 3,756,134,240.11/68,205.84
  6. Step 6: Final answer
    x = 55,070.57

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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.