Home / 45,435.24-68,182.20-19,140.12

Finding the Fourth Proportional to 45,435.24, 68,182.20 and 19,140.12

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Solution

The fourth proportional to 45,435.24, 68,182.20 and 19,140.12 is: 28,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,435.24 : 68,182.20 = 19,140.12 : x
  2. Step 2: Convert to fraction form
    45,435.24/68,182.20 = 19,140.12/x
  3. Step 3: Cross multiply
    45,435.24x = 68,182.20 × 19,140.12
  4. Step 4: Simplify right side
    45,435.24x = 1,305,015,489.86
  5. Step 5: Solve for x
    x = 1,305,015,489.86/45,435.24
  6. Step 6: Final answer
    x = 28,722.54

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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.