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Finding the Fourth Proportional to 45,858.75, 68,779.81 and 15,872.95

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Solution

The fourth proportional to 45,858.75, 68,779.81 and 15,872.95 is: 23,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.75 : 68,779.81 = 15,872.95 : x
  2. Step 2: Convert to fraction form
    45,858.75/68,779.81 = 15,872.95/x
  3. Step 3: Cross multiply
    45,858.75x = 68,779.81 × 15,872.95
  4. Step 4: Simplify right side
    45,858.75x = 1,091,738,485.14
  5. Step 5: Solve for x
    x = 1,091,738,485.14/45,858.75
  6. Step 6: Final answer
    x = 23,806.55

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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.