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Finding the Fourth Proportional to 43,721.03, 65,574.49 and 15,636.31

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Solution

The fourth proportional to 43,721.03, 65,574.49 and 15,636.31 is: 23,451.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,721.03 : 65,574.49 = 15,636.31 : x
  2. Step 2: Convert to fraction form
    43,721.03/65,574.49 = 15,636.31/x
  3. Step 3: Cross multiply
    43,721.03x = 65,574.49 × 15,636.31
  4. Step 4: Simplify right side
    43,721.03x = 1,025,343,053.73
  5. Step 5: Solve for x
    x = 1,025,343,053.73/43,721.03
  6. Step 6: Final answer
    x = 23,451.94

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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.