Home / 67,999.20-102,020.40-30,544.80

Finding the Fourth Proportional to 67,999.20, 102,020.40 and 30,544.80

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Solution

The fourth proportional to 67,999.20, 102,020.40 and 30,544.80 is: 45,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,999.20 : 102,020.40 = 30,544.80 : x
  2. Step 2: Convert to fraction form
    67,999.20/102,020.40 = 30,544.80/x
  3. Step 3: Cross multiply
    67,999.20x = 102,020.40 × 30,544.80
  4. Step 4: Simplify right side
    67,999.20x = 3,116,192,713.92
  5. Step 5: Solve for x
    x = 3,116,192,713.92/67,999.20
  6. Step 6: Final answer
    x = 45,826.90

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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.