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Finding the Fourth Proportional to 43,405.30, 65,107.95 and 15,696.82

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Solution

The fourth proportional to 43,405.30, 65,107.95 and 15,696.82 is: 23,545.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,405.30 : 65,107.95 = 15,696.82 : x
  2. Step 2: Convert to fraction form
    43,405.30/65,107.95 = 15,696.82/x
  3. Step 3: Cross multiply
    43,405.30x = 65,107.95 × 15,696.82
  4. Step 4: Simplify right side
    43,405.30x = 1,021,987,771.72
  5. Step 5: Solve for x
    x = 1,021,987,771.72/43,405.30
  6. Step 6: Final answer
    x = 23,545.23

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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.