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Finding the Fourth Proportional to 43,459.45, 65,189.17 and 13,879.59

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Solution

The fourth proportional to 43,459.45, 65,189.17 and 13,879.59 is: 20,819.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,459.45 : 65,189.17 = 13,879.59 : x
  2. Step 2: Convert to fraction form
    43,459.45/65,189.17 = 13,879.59/x
  3. Step 3: Cross multiply
    43,459.45x = 65,189.17 × 13,879.59
  4. Step 4: Simplify right side
    43,459.45x = 904,799,029.22
  5. Step 5: Solve for x
    x = 904,799,029.22/43,459.45
  6. Step 6: Final answer
    x = 20,819.39

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Similar ratio
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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.