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Finding the Fourth Proportional to 53,858.48, 80,751.27 and 18,779

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Solution

The fourth proportional to 53,858.48, 80,751.27 and 18,779 is: 28,155.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,858.48 : 80,751.27 = 18,779 : x
  2. Step 2: Convert to fraction form
    53,858.48/80,751.27 = 18,779/x
  3. Step 3: Cross multiply
    53,858.48x = 80,751.27 × 18,779
  4. Step 4: Simplify right side
    53,858.48x = 1,516,428,099.33
  5. Step 5: Solve for x
    x = 1,516,428,099.33/53,858.48
  6. Step 6: Final answer
    x = 28,155.79

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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.