Home / 80,912.96-111,657.54-45,102.20

Finding the Fourth Proportional to 80,912.96, 111,657.54 and 45,102.20

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Solution

The fourth proportional to 80,912.96, 111,657.54 and 45,102.20 is: 62,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,912.96 : 111,657.54 = 45,102.20 : x
  2. Step 2: Convert to fraction form
    80,912.96/111,657.54 = 45,102.20/x
  3. Step 3: Cross multiply
    80,912.96x = 111,657.54 × 45,102.20
  4. Step 4: Simplify right side
    80,912.96x = 5,036,000,142.30
  5. Step 5: Solve for x
    x = 5,036,000,142.30/80,912.96
  6. Step 6: Final answer
    x = 62,239.73

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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.