Home / 45,953.31-68,939.19-20,986.65

Finding the Fourth Proportional to 45,953.31, 68,939.19 and 20,986.65

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Solution

The fourth proportional to 45,953.31, 68,939.19 and 20,986.65 is: 31,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,953.31 : 68,939.19 = 20,986.65 : x
  2. Step 2: Convert to fraction form
    45,953.31/68,939.19 = 20,986.65/x
  3. Step 3: Cross multiply
    45,953.31x = 68,939.19 × 20,986.65
  4. Step 4: Simplify right side
    45,953.31x = 1,446,802,651.81
  5. Step 5: Solve for x
    x = 1,446,802,651.81/45,953.31
  6. Step 6: Final answer
    x = 31,484.19

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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.