Home / 80,660.20-120,846.30-39,015.40

Finding the Fourth Proportional to 80,660.20, 120,846.30 and 39,015.40

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Solution

The fourth proportional to 80,660.20, 120,846.30 and 39,015.40 is: 58,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.20 : 120,846.30 = 39,015.40 : x
  2. Step 2: Convert to fraction form
    80,660.20/120,846.30 = 39,015.40/x
  3. Step 3: Cross multiply
    80,660.20x = 120,846.30 × 39,015.40
  4. Step 4: Simplify right side
    80,660.20x = 4,714,866,733.02
  5. Step 5: Solve for x
    x = 4,714,866,733.02/80,660.20
  6. Step 6: Final answer
    x = 58,453.45

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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.