Home / 78,284.85-108,021.60-43,827.80

Finding the Fourth Proportional to 78,284.85, 108,021.60 and 43,827.80

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Solution

The fourth proportional to 78,284.85, 108,021.60 and 43,827.80 is: 60,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,284.85 : 108,021.60 = 43,827.80 : x
  2. Step 2: Convert to fraction form
    78,284.85/108,021.60 = 43,827.80/x
  3. Step 3: Cross multiply
    78,284.85x = 108,021.60 × 43,827.80
  4. Step 4: Simplify right side
    78,284.85x = 4,734,348,540.37
  5. Step 5: Solve for x
    x = 4,734,348,540.37/78,284.85
  6. Step 6: Final answer
    x = 60,475.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.