Home / 80,989.89-111,764.96-45,180.50

Finding the Fourth Proportional to 80,989.89, 111,764.96 and 45,180.50

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Solution

The fourth proportional to 80,989.89, 111,764.96 and 45,180.50 is: 62,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,989.89 : 111,764.96 = 45,180.50 : x
  2. Step 2: Convert to fraction form
    80,989.89/111,764.96 = 45,180.50/x
  3. Step 3: Cross multiply
    80,989.89x = 111,764.96 × 45,180.50
  4. Step 4: Simplify right side
    80,989.89x = 5,049,595,990.55
  5. Step 5: Solve for x
    x = 5,049,595,990.55/80,989.89
  6. Step 6: Final answer
    x = 62,348.47

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1.5x scale

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.