Home / 105,729.14-145,912.84-57,982.50

Finding the Fourth Proportional to 105,729.14, 145,912.84 and 57,982.50

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Solution

The fourth proportional to 105,729.14, 145,912.84 and 57,982.50 is: 80,019.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,729.14 : 145,912.84 = 57,982.50 : x
  2. Step 2: Convert to fraction form
    105,729.14/145,912.84 = 57,982.50/x
  3. Step 3: Cross multiply
    105,729.14x = 145,912.84 × 57,982.50
  4. Step 4: Simplify right side
    105,729.14x = 8,460,391,245.30
  5. Step 5: Solve for x
    x = 8,460,391,245.30/105,729.14
  6. Step 6: Final answer
    x = 80,019.48

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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.