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Finding the Fourth Proportional to 72,305.65, 108,269.84 and 58,188.56

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Solution

The fourth proportional to 72,305.65, 108,269.84 and 58,188.56 is: 87,131.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,305.65 : 108,269.84 = 58,188.56 : x
  2. Step 2: Convert to fraction form
    72,305.65/108,269.84 = 58,188.56/x
  3. Step 3: Cross multiply
    72,305.65x = 108,269.84 × 58,188.56
  4. Step 4: Simplify right side
    72,305.65x = 6,300,065,790.09
  5. Step 5: Solve for x
    x = 6,300,065,790.09/72,305.65
  6. Step 6: Final answer
    x = 87,131.04

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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.