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Finding the Fourth Proportional to 54,441, 81,672.02 and 18,903.60

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Solution

The fourth proportional to 54,441, 81,672.02 and 18,903.60 is: 28,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,441 : 81,672.02 = 18,903.60 : x
  2. Step 2: Convert to fraction form
    54,441/81,672.02 = 18,903.60/x
  3. Step 3: Cross multiply
    54,441x = 81,672.02 × 18,903.60
  4. Step 4: Simplify right side
    54,441x = 1,543,895,197.27
  5. Step 5: Solve for x
    x = 1,543,895,197.27/54,441
  6. Step 6: Final answer
    x = 28,359.05

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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.