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Finding the Fourth Proportional to 68,814, 94,964.76 and 39,006

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Solution

The fourth proportional to 68,814, 94,964.76 and 39,006 is: 53,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,814 : 94,964.76 = 39,006 : x
  2. Step 2: Convert to fraction form
    68,814/94,964.76 = 39,006/x
  3. Step 3: Cross multiply
    68,814x = 94,964.76 × 39,006
  4. Step 4: Simplify right side
    68,814x = 3,704,195,428.56
  5. Step 5: Solve for x
    x = 3,704,195,428.56/68,814
  6. Step 6: Final answer
    x = 53,829.10

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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.