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Finding the Fourth Proportional to 76,321.80, 105,326.82 and 44,485.56

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Solution

The fourth proportional to 76,321.80, 105,326.82 and 44,485.56 is: 61,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,321.80 : 105,326.82 = 44,485.56 : x
  2. Step 2: Convert to fraction form
    76,321.80/105,326.82 = 44,485.56/x
  3. Step 3: Cross multiply
    76,321.80x = 105,326.82 × 44,485.56
  4. Step 4: Simplify right side
    76,321.80x = 4,685,522,570.72
  5. Step 5: Solve for x
    x = 4,685,522,570.72/76,321.80
  6. Step 6: Final answer
    x = 61,391.67

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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.