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Finding the Fourth Proportional to 43,405, 65,107.44 and 28,506.18

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Solution

The fourth proportional to 43,405, 65,107.44 and 28,506.18 is: 42,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,405 : 65,107.44 = 28,506.18 : x
  2. Step 2: Convert to fraction form
    43,405/65,107.44 = 28,506.18/x
  3. Step 3: Cross multiply
    43,405x = 65,107.44 × 28,506.18
  4. Step 4: Simplify right side
    43,405x = 1,855,964,403.98
  5. Step 5: Solve for x
    x = 1,855,964,403.98/43,405
  6. Step 6: Final answer
    x = 42,759.23

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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.