Home / 80,367.89-120,315.35-53,647.60

Finding the Fourth Proportional to 80,367.89, 120,315.35 and 53,647.60

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Solution

The fourth proportional to 80,367.89, 120,315.35 and 53,647.60 is: 80,313.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,367.89 : 120,315.35 = 53,647.60 : x
  2. Step 2: Convert to fraction form
    80,367.89/120,315.35 = 53,647.60/x
  3. Step 3: Cross multiply
    80,367.89x = 120,315.35 × 53,647.60
  4. Step 4: Simplify right side
    80,367.89x = 6,454,630,071.45
  5. Step 5: Solve for x
    x = 6,454,630,071.45/80,367.89
  6. Step 6: Final answer
    x = 80,313.54

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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.