Home / 45,939-68,934.42-21,315

Finding the Fourth Proportional to 45,939, 68,934.42 and 21,315

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Solution

The fourth proportional to 45,939, 68,934.42 and 21,315 is: 31,984.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,939 : 68,934.42 = 21,315 : x
  2. Step 2: Convert to fraction form
    45,939/68,934.42 = 21,315/x
  3. Step 3: Cross multiply
    45,939x = 68,934.42 × 21,315
  4. Step 4: Simplify right side
    45,939x = 1,469,337,162.30
  5. Step 5: Solve for x
    x = 1,469,337,162.30/45,939
  6. Step 6: Final answer
    x = 31,984.53

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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.