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Finding the Fourth Proportional to 30,074.40, 45,025.20 and 18,410.40

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Solution

The fourth proportional to 30,074.40, 45,025.20 and 18,410.40 is: 27,562.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,074.40 : 45,025.20 = 18,410.40 : x
  2. Step 2: Convert to fraction form
    30,074.40/45,025.20 = 18,410.40/x
  3. Step 3: Cross multiply
    30,074.40x = 45,025.20 × 18,410.40
  4. Step 4: Simplify right side
    30,074.40x = 828,931,942.08
  5. Step 5: Solve for x
    x = 828,931,942.08/30,074.40
  6. Step 6: Final answer
    x = 27,562.71

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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.