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Finding the Fourth Proportional to 43,619.67, 65,429.51 and 14,039.82

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Solution

The fourth proportional to 43,619.67, 65,429.51 and 14,039.82 is: 21,059.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,619.67 : 65,429.51 = 14,039.82 : x
  2. Step 2: Convert to fraction form
    43,619.67/65,429.51 = 14,039.82/x
  3. Step 3: Cross multiply
    43,619.67x = 65,429.51 × 14,039.82
  4. Step 4: Simplify right side
    43,619.67x = 918,618,472.89
  5. Step 5: Solve for x
    x = 918,618,472.89/43,619.67
  6. Step 6: Final answer
    x = 21,059.73

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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.