Home / 45,629.90-68,443.82-20,651.86

Finding the Fourth Proportional to 45,629.90, 68,443.82 and 20,651.86

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Solution

The fourth proportional to 45,629.90, 68,443.82 and 20,651.86 is: 30,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,629.90 : 68,443.82 = 20,651.86 : x
  2. Step 2: Convert to fraction form
    45,629.90/68,443.82 = 20,651.86/x
  3. Step 3: Cross multiply
    45,629.90x = 68,443.82 × 20,651.86
  4. Step 4: Simplify right side
    45,629.90x = 1,413,492,248.25
  5. Step 5: Solve for x
    x = 1,413,492,248.25/45,629.90
  6. Step 6: Final answer
    x = 30,977.33

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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.