Home / 80,650.81-121,000.79-41,235.60

Finding the Fourth Proportional to 80,650.81, 121,000.79 and 41,235.60

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Solution

The fourth proportional to 80,650.81, 121,000.79 and 41,235.60 is: 61,865.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,650.81 : 121,000.79 = 41,235.60 : x
  2. Step 2: Convert to fraction form
    80,650.81/121,000.79 = 41,235.60/x
  3. Step 3: Cross multiply
    80,650.81x = 121,000.79 × 41,235.60
  4. Step 4: Simplify right side
    80,650.81x = 4,989,540,176.12
  5. Step 5: Solve for x
    x = 4,989,540,176.12/80,650.81
  6. Step 6: Final answer
    x = 61,865.96

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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.