Home / 54,939.32-82,408.94-19,870.80

Finding the Fourth Proportional to 54,939.32, 82,408.94 and 19,870.80

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Solution

The fourth proportional to 54,939.32, 82,408.94 and 19,870.80 is: 29,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,939.32 : 82,408.94 = 19,870.80 : x
  2. Step 2: Convert to fraction form
    54,939.32/82,408.94 = 19,870.80/x
  3. Step 3: Cross multiply
    54,939.32x = 82,408.94 × 19,870.80
  4. Step 4: Simplify right side
    54,939.32x = 1,637,531,564.95
  5. Step 5: Solve for x
    x = 1,637,531,564.95/54,939.32
  6. Step 6: Final answer
    x = 29,806.19

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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.