Home / 45,939.99-68,817.71-20,945.65

Finding the Fourth Proportional to 45,939.99, 68,817.71 and 20,945.65

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Solution

The fourth proportional to 45,939.99, 68,817.71 and 20,945.65 is: 31,376.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,939.99 : 68,817.71 = 20,945.65 : x
  2. Step 2: Convert to fraction form
    45,939.99/68,817.71 = 20,945.65/x
  3. Step 3: Cross multiply
    45,939.99x = 68,817.71 × 20,945.65
  4. Step 4: Simplify right side
    45,939.99x = 1,441,431,719.83
  5. Step 5: Solve for x
    x = 1,441,431,719.83/45,939.99
  6. Step 6: Final answer
    x = 31,376.41

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1.5x scale

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.