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Finding the Fourth Proportional to 79,705.80, 109,993.82 and 43,895.88

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Solution

The fourth proportional to 79,705.80, 109,993.82 and 43,895.88 is: 60,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,705.80 : 109,993.82 = 43,895.88 : x
  2. Step 2: Convert to fraction form
    79,705.80/109,993.82 = 43,895.88/x
  3. Step 3: Cross multiply
    79,705.80x = 109,993.82 × 43,895.88
  4. Step 4: Simplify right side
    79,705.80x = 4,828,275,303.98
  5. Step 5: Solve for x
    x = 4,828,275,303.98/79,705.80
  6. Step 6: Final answer
    x = 60,576.21

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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.