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Finding the Fourth Proportional to 68,659.94, 102,891.48 and 39,015.15

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Solution

The fourth proportional to 68,659.94, 102,891.48 and 39,015.15 is: 58,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,659.94 : 102,891.48 = 39,015.15 : x
  2. Step 2: Convert to fraction form
    68,659.94/102,891.48 = 39,015.15/x
  3. Step 3: Cross multiply
    68,659.94x = 102,891.48 × 39,015.15
  4. Step 4: Simplify right side
    68,659.94x = 4,014,326,525.92
  5. Step 5: Solve for x
    x = 4,014,326,525.92/68,659.94
  6. Step 6: Final answer
    x = 58,466.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.