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Finding the Fourth Proportional to 79,289.28, 118,899.36 and 26,684.64

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Solution

The fourth proportional to 79,289.28, 118,899.36 and 26,684.64 is: 40,015.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,289.28 : 118,899.36 = 26,684.64 : x
  2. Step 2: Convert to fraction form
    79,289.28/118,899.36 = 26,684.64/x
  3. Step 3: Cross multiply
    79,289.28x = 118,899.36 × 26,684.64
  4. Step 4: Simplify right side
    79,289.28x = 3,172,786,617.83
  5. Step 5: Solve for x
    x = 3,172,786,617.83/79,289.28
  6. Step 6: Final answer
    x = 40,015.33

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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.