Home / 79,213.82-109,315.05-43,405.19

Finding the Fourth Proportional to 79,213.82, 109,315.05 and 43,405.19

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Solution

The fourth proportional to 79,213.82, 109,315.05 and 43,405.19 is: 59,899.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.82 : 109,315.05 = 43,405.19 : x
  2. Step 2: Convert to fraction form
    79,213.82/109,315.05 = 43,405.19/x
  3. Step 3: Cross multiply
    79,213.82x = 109,315.05 × 43,405.19
  4. Step 4: Simplify right side
    79,213.82x = 4,744,840,515.11
  5. Step 5: Solve for x
    x = 4,744,840,515.11/79,213.82
  6. Step 6: Final answer
    x = 59,899.15

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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.