Home / 54,705.85-82,065.49-21,421.53

Finding the Fourth Proportional to 54,705.85, 82,065.49 and 21,421.53

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Solution

The fourth proportional to 54,705.85, 82,065.49 and 21,421.53 is: 32,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,705.85 : 82,065.49 = 21,421.53 : x
  2. Step 2: Convert to fraction form
    54,705.85/82,065.49 = 21,421.53/x
  3. Step 3: Cross multiply
    54,705.85x = 82,065.49 × 21,421.53
  4. Step 4: Simplify right side
    54,705.85x = 1,757,968,302.45
  5. Step 5: Solve for x
    x = 1,757,968,302.45/54,705.85
  6. Step 6: Final answer
    x = 32,134.92

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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.