Home / 30,138.20-45,174.46-25,742.32

Finding the Fourth Proportional to 30,138.20, 45,174.46 and 25,742.32

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Solution

The fourth proportional to 30,138.20, 45,174.46 and 25,742.32 is: 38,585.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.20 : 45,174.46 = 25,742.32 : x
  2. Step 2: Convert to fraction form
    30,138.20/45,174.46 = 25,742.32/x
  3. Step 3: Cross multiply
    30,138.20x = 45,174.46 × 25,742.32
  4. Step 4: Simplify right side
    30,138.20x = 1,162,895,405.15
  5. Step 5: Solve for x
    x = 1,162,895,405.15/30,138.20
  6. Step 6: Final answer
    x = 38,585.43

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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.