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Finding the Fourth Proportional to 79,260.32, 109,379.16 and 43,450.64

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Solution

The fourth proportional to 79,260.32, 109,379.16 and 43,450.64 is: 59,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,260.32 : 109,379.16 = 43,450.64 : x
  2. Step 2: Convert to fraction form
    79,260.32/109,379.16 = 43,450.64/x
  3. Step 3: Cross multiply
    79,260.32x = 109,379.16 × 43,450.64
  4. Step 4: Simplify right side
    79,260.32x = 4,752,594,504.66
  5. Step 5: Solve for x
    x = 4,752,594,504.66/79,260.32
  6. Step 6: Final answer
    x = 59,961.84

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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.