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Finding the Fourth Proportional to 53,668.43, 80,525.42 and 28,702

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Solution

The fourth proportional to 53,668.43, 80,525.42 and 28,702 is: 43,065.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,668.43 : 80,525.42 = 28,702 : x
  2. Step 2: Convert to fraction form
    53,668.43/80,525.42 = 28,702/x
  3. Step 3: Cross multiply
    53,668.43x = 80,525.42 × 28,702
  4. Step 4: Simplify right side
    53,668.43x = 2,311,240,604.84
  5. Step 5: Solve for x
    x = 2,311,240,604.84/53,668.43
  6. Step 6: Final answer
    x = 43,065.18

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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.