Home / 34,145.78-51,218.16-20,822.69

Finding the Fourth Proportional to 34,145.78, 51,218.16 and 20,822.69

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Solution

The fourth proportional to 34,145.78, 51,218.16 and 20,822.69 is: 31,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,145.78 : 51,218.16 = 20,822.69 : x
  2. Step 2: Convert to fraction form
    34,145.78/51,218.16 = 20,822.69/x
  3. Step 3: Cross multiply
    34,145.78x = 51,218.16 × 20,822.69
  4. Step 4: Simplify right side
    34,145.78x = 1,066,499,868.05
  5. Step 5: Solve for x
    x = 1,066,499,868.05/34,145.78
  6. Step 6: Final answer
    x = 31,233.72

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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.