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Finding the Fourth Proportional to 43,661.54, 65,437.51 and 18,672.19

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Solution

The fourth proportional to 43,661.54, 65,437.51 and 18,672.19 is: 27,984.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,661.54 : 65,437.51 = 18,672.19 : x
  2. Step 2: Convert to fraction form
    43,661.54/65,437.51 = 18,672.19/x
  3. Step 3: Cross multiply
    43,661.54x = 65,437.51 × 18,672.19
  4. Step 4: Simplify right side
    43,661.54x = 1,221,861,736.76
  5. Step 5: Solve for x
    x = 1,221,861,736.76/43,661.54
  6. Step 6: Final answer
    x = 27,984.85

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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.