Home / 45,617.40-68,469.30-28,121.40

Finding the Fourth Proportional to 45,617.40, 68,469.30 and 28,121.40

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Solution

The fourth proportional to 45,617.40, 68,469.30 and 28,121.40 is: 42,208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,617.40 : 68,469.30 = 28,121.40 : x
  2. Step 2: Convert to fraction form
    45,617.40/68,469.30 = 28,121.40/x
  3. Step 3: Cross multiply
    45,617.40x = 68,469.30 × 28,121.40
  4. Step 4: Simplify right side
    45,617.40x = 1,925,452,573.02
  5. Step 5: Solve for x
    x = 1,925,452,573.02/45,617.40
  6. Step 6: Final answer
    x = 42,208.73

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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.