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Finding the Fourth Proportional to 72,471.14, 100,011.19 and 43,786.81

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Solution

The fourth proportional to 72,471.14, 100,011.19 and 43,786.81 is: 60,426.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,471.14 : 100,011.19 = 43,786.81 : x
  2. Step 2: Convert to fraction form
    72,471.14/100,011.19 = 43,786.81/x
  3. Step 3: Cross multiply
    72,471.14x = 100,011.19 × 43,786.81
  4. Step 4: Simplify right side
    72,471.14x = 4,379,170,474.35
  5. Step 5: Solve for x
    x = 4,379,170,474.35/72,471.14
  6. Step 6: Final answer
    x = 60,426.41

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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.