Home / 80,288.34-120,366.87-30,340.14

Finding the Fourth Proportional to 80,288.34, 120,366.87 and 30,340.14

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Solution

The fourth proportional to 80,288.34, 120,366.87 and 30,340.14 is: 45,485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,288.34 : 120,366.87 = 30,340.14 : x
  2. Step 2: Convert to fraction form
    80,288.34/120,366.87 = 30,340.14/x
  3. Step 3: Cross multiply
    80,288.34x = 120,366.87 × 30,340.14
  4. Step 4: Simplify right side
    80,288.34x = 3,651,947,687.16
  5. Step 5: Solve for x
    x = 3,651,947,687.16/80,288.34
  6. Step 6: Final answer
    x = 45,485.41

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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.