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Finding the Fourth Proportional to 43,996.15, 65,996.79 and 16,978.63

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Solution

The fourth proportional to 43,996.15, 65,996.79 and 16,978.63 is: 25,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,996.15 : 65,996.79 = 16,978.63 : x
  2. Step 2: Convert to fraction form
    43,996.15/65,996.79 = 16,978.63/x
  3. Step 3: Cross multiply
    43,996.15x = 65,996.79 × 16,978.63
  4. Step 4: Simplify right side
    43,996.15x = 1,120,535,078.60
  5. Step 5: Solve for x
    x = 1,120,535,078.60/43,996.15
  6. Step 6: Final answer
    x = 25,468.93

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1.5x scale

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.