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Finding the Fourth Proportional to 54,378.52, 81,600.58 and 19,315.44

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Solution

The fourth proportional to 54,378.52, 81,600.58 and 19,315.44 is: 28,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,378.52 : 81,600.58 = 19,315.44 : x
  2. Step 2: Convert to fraction form
    54,378.52/81,600.58 = 19,315.44/x
  3. Step 3: Cross multiply
    54,378.52x = 81,600.58 × 19,315.44
  4. Step 4: Simplify right side
    54,378.52x = 1,576,151,106.96
  5. Step 5: Solve for x
    x = 1,576,151,106.96/54,378.52
  6. Step 6: Final answer
    x = 28,984.81

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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.