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Finding the Fourth Proportional to 68,808, 94,955.04 and 39,000

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Solution

The fourth proportional to 68,808, 94,955.04 and 39,000 is: 53,820.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,808 : 94,955.04 = 39,000 : x
  2. Step 2: Convert to fraction form
    68,808/94,955.04 = 39,000/x
  3. Step 3: Cross multiply
    68,808x = 94,955.04 × 39,000
  4. Step 4: Simplify right side
    68,808x = 3,703,246,560.00
  5. Step 5: Solve for x
    x = 3,703,246,560.00/68,808
  6. Step 6: Final answer
    x = 53,820.00

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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.