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Finding the Fourth Proportional to 79,179.36, 109,268.64 and 43,368.64

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Solution

The fourth proportional to 79,179.36, 109,268.64 and 43,368.64 is: 59,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.36 : 109,268.64 = 43,368.64 : x
  2. Step 2: Convert to fraction form
    79,179.36/109,268.64 = 43,368.64/x
  3. Step 3: Cross multiply
    79,179.36x = 109,268.64 × 43,368.64
  4. Step 4: Simplify right side
    79,179.36x = 4,738,832,311.45
  5. Step 5: Solve for x
    x = 4,738,832,311.45/79,179.36
  6. Step 6: Final answer
    x = 59,849.34

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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.