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Finding the Fourth Proportional to 43,292.40, 64,922.40 and 30,105.60

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Solution

The fourth proportional to 43,292.40, 64,922.40 and 30,105.60 is: 45,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,292.40 : 64,922.40 = 30,105.60 : x
  2. Step 2: Convert to fraction form
    43,292.40/64,922.40 = 30,105.60/x
  3. Step 3: Cross multiply
    43,292.40x = 64,922.40 × 30,105.60
  4. Step 4: Simplify right side
    43,292.40x = 1,954,527,805.44
  5. Step 5: Solve for x
    x = 1,954,527,805.44/43,292.40
  6. Step 6: Final answer
    x = 45,147.13

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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.