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Finding the Fourth Proportional to 79,272.36, 109,469.88 and 51,027.12

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Solution

The fourth proportional to 79,272.36, 109,469.88 and 51,027.12 is: 70,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,272.36 : 109,469.88 = 51,027.12 : x
  2. Step 2: Convert to fraction form
    79,272.36/109,469.88 = 51,027.12/x
  3. Step 3: Cross multiply
    79,272.36x = 109,469.88 × 51,027.12
  4. Step 4: Simplify right side
    79,272.36x = 5,585,932,703.15
  5. Step 5: Solve for x
    x = 5,585,932,703.15/79,272.36
  6. Step 6: Final answer
    x = 70,465.07

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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.