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Finding the Fourth Proportional to 43,578.81, 65,376.72 and 17,283.78

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Solution

The fourth proportional to 43,578.81, 65,376.72 and 17,283.78 is: 25,929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,578.81 : 65,376.72 = 17,283.78 : x
  2. Step 2: Convert to fraction form
    43,578.81/65,376.72 = 17,283.78/x
  3. Step 3: Cross multiply
    43,578.81x = 65,376.72 × 17,283.78
  4. Step 4: Simplify right side
    43,578.81x = 1,129,956,845.60
  5. Step 5: Solve for x
    x = 1,129,956,845.60/43,578.81
  6. Step 6: Final answer
    x = 25,929.04

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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.