Home / 45,858.69-68,788.13-12,579.21

Finding the Fourth Proportional to 45,858.69, 68,788.13 and 12,579.21

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Solution

The fourth proportional to 45,858.69, 68,788.13 and 12,579.21 is: 18,868.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,858.69 : 68,788.13 = 12,579.21 : x
  2. Step 2: Convert to fraction form
    45,858.69/68,788.13 = 12,579.21/x
  3. Step 3: Cross multiply
    45,858.69x = 68,788.13 × 12,579.21
  4. Step 4: Simplify right side
    45,858.69x = 865,300,269.88
  5. Step 5: Solve for x
    x = 865,300,269.88/45,858.69
  6. Step 6: Final answer
    x = 18,868.84

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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.