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Finding the Fourth Proportional to 72,558.27, 100,151.34 and 43,878

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Solution

The fourth proportional to 72,558.27, 100,151.34 and 43,878 is: 60,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558.27 : 100,151.34 = 43,878 : x
  2. Step 2: Convert to fraction form
    72,558.27/100,151.34 = 43,878/x
  3. Step 3: Cross multiply
    72,558.27x = 100,151.34 × 43,878
  4. Step 4: Simplify right side
    72,558.27x = 4,394,440,496.52
  5. Step 5: Solve for x
    x = 4,394,440,496.52/72,558.27
  6. Step 6: Final answer
    x = 60,564.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.