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Finding the Fourth Proportional to 68,125.50, 94,021.02 and 39,829.50

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Solution

The fourth proportional to 68,125.50, 94,021.02 and 39,829.50 is: 54,969.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,125.50 : 94,021.02 = 39,829.50 : x
  2. Step 2: Convert to fraction form
    68,125.50/94,021.02 = 39,829.50/x
  3. Step 3: Cross multiply
    68,125.50x = 94,021.02 × 39,829.50
  4. Step 4: Simplify right side
    68,125.50x = 3,744,810,216.09
  5. Step 5: Solve for x
    x = 3,744,810,216.09/68,125.50
  6. Step 6: Final answer
    x = 54,969.29

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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.