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Finding the Fourth Proportional to 72,512.28, 100,067.94 and 43,828.02

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Solution

The fourth proportional to 72,512.28, 100,067.94 and 43,828.02 is: 60,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,512.28 : 100,067.94 = 43,828.02 : x
  2. Step 2: Convert to fraction form
    72,512.28/100,067.94 = 43,828.02/x
  3. Step 3: Cross multiply
    72,512.28x = 100,067.94 × 43,828.02
  4. Step 4: Simplify right side
    72,512.28x = 4,385,779,675.68
  5. Step 5: Solve for x
    x = 4,385,779,675.68/72,512.28
  6. Step 6: Final answer
    x = 60,483.27

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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.