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Finding the Fourth Proportional to 80,015.99, 120,030.21 and 23,851.80

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Solution

The fourth proportional to 80,015.99, 120,030.21 and 23,851.80 is: 35,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,015.99 : 120,030.21 = 23,851.80 : x
  2. Step 2: Convert to fraction form
    80,015.99/120,030.21 = 23,851.80/x
  3. Step 3: Cross multiply
    80,015.99x = 120,030.21 × 23,851.80
  4. Step 4: Simplify right side
    80,015.99x = 2,862,936,562.88
  5. Step 5: Solve for x
    x = 2,862,936,562.88/80,015.99
  6. Step 6: Final answer
    x = 35,779.56

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1.5x scale

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.