Home / 43,945.20-65,929.02-12,780.44

Finding the Fourth Proportional to 43,945.20, 65,929.02 and 12,780.44

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Solution

The fourth proportional to 43,945.20, 65,929.02 and 12,780.44 is: 19,173.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,945.20 : 65,929.02 = 12,780.44 : x
  2. Step 2: Convert to fraction form
    43,945.20/65,929.02 = 12,780.44/x
  3. Step 3: Cross multiply
    43,945.20x = 65,929.02 × 12,780.44
  4. Step 4: Simplify right side
    43,945.20x = 842,601,884.37
  5. Step 5: Solve for x
    x = 842,601,884.37/43,945.20
  6. Step 6: Final answer
    x = 19,173.92

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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.