Home / 79,015.12-109,040.16-43,205.39

Finding the Fourth Proportional to 79,015.12, 109,040.16 and 43,205.39

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Solution

The fourth proportional to 79,015.12, 109,040.16 and 43,205.39 is: 59,623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,015.12 : 109,040.16 = 43,205.39 : x
  2. Step 2: Convert to fraction form
    79,015.12/109,040.16 = 43,205.39/x
  3. Step 3: Cross multiply
    79,015.12x = 109,040.16 × 43,205.39
  4. Step 4: Simplify right side
    79,015.12x = 4,711,122,093.26
  5. Step 5: Solve for x
    x = 4,711,122,093.26/79,015.12
  6. Step 6: Final answer
    x = 59,623.05

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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.