Home / 45,821.80-68,742.51-14,231.20

Finding the Fourth Proportional to 45,821.80, 68,742.51 and 14,231.20

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Solution

The fourth proportional to 45,821.80, 68,742.51 and 14,231.20 is: 21,349.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,821.80 : 68,742.51 = 14,231.20 : x
  2. Step 2: Convert to fraction form
    45,821.80/68,742.51 = 14,231.20/x
  3. Step 3: Cross multiply
    45,821.80x = 68,742.51 × 14,231.20
  4. Step 4: Simplify right side
    45,821.80x = 978,288,408.31
  5. Step 5: Solve for x
    x = 978,288,408.31/45,821.80
  6. Step 6: Final answer
    x = 21,349.85

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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.