Home / 72,964.20-109,446.30-20,373.60

Finding the Fourth Proportional to 72,964.20, 109,446.30 and 20,373.60

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Solution

The fourth proportional to 72,964.20, 109,446.30 and 20,373.60 is: 30,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,964.20 : 109,446.30 = 20,373.60 : x
  2. Step 2: Convert to fraction form
    72,964.20/109,446.30 = 20,373.60/x
  3. Step 3: Cross multiply
    72,964.20x = 109,446.30 × 20,373.60
  4. Step 4: Simplify right side
    72,964.20x = 2,229,815,137.68
  5. Step 5: Solve for x
    x = 2,229,815,137.68/72,964.20
  6. Step 6: Final answer
    x = 30,560.40

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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.