Home / 43,408.50-65,112.69-28,509.66

Finding the Fourth Proportional to 43,408.50, 65,112.69 and 28,509.66

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Solution

The fourth proportional to 43,408.50, 65,112.69 and 28,509.66 is: 42,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.50 : 65,112.69 = 28,509.66 : x
  2. Step 2: Convert to fraction form
    43,408.50/65,112.69 = 28,509.66/x
  3. Step 3: Cross multiply
    43,408.50x = 65,112.69 × 28,509.66
  4. Step 4: Simplify right side
    43,408.50x = 1,856,340,653.59
  5. Step 5: Solve for x
    x = 1,856,340,653.59/43,408.50
  6. Step 6: Final answer
    x = 42,764.45

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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.