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Finding the Fourth Proportional to 43,662.72, 65,494.26 and 18,681.72

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Solution

The fourth proportional to 43,662.72, 65,494.26 and 18,681.72 is: 28,022.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,662.72 : 65,494.26 = 18,681.72 : x
  2. Step 2: Convert to fraction form
    43,662.72/65,494.26 = 18,681.72/x
  3. Step 3: Cross multiply
    43,662.72x = 65,494.26 × 18,681.72
  4. Step 4: Simplify right side
    43,662.72x = 1,223,545,426.93
  5. Step 5: Solve for x
    x = 1,223,545,426.93/43,662.72
  6. Step 6: Final answer
    x = 28,022.66

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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.