Home / 43,690.68-65,429.10-20,323.80

Finding the Fourth Proportional to 43,690.68, 65,429.10 and 20,323.80

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Solution

The fourth proportional to 43,690.68, 65,429.10 and 20,323.80 is: 30,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,690.68 : 65,429.10 = 20,323.80 : x
  2. Step 2: Convert to fraction form
    43,690.68/65,429.10 = 20,323.80/x
  3. Step 3: Cross multiply
    43,690.68x = 65,429.10 × 20,323.80
  4. Step 4: Simplify right side
    43,690.68x = 1,329,767,942.58
  5. Step 5: Solve for x
    x = 1,329,767,942.58/43,690.68
  6. Step 6: Final answer
    x = 30,435.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.