Home / 51,395.03-77,121.70-20,252.15

Finding the Fourth Proportional to 51,395.03, 77,121.70 and 20,252.15

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Solution

The fourth proportional to 51,395.03, 77,121.70 and 20,252.15 is: 30,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,395.03 : 77,121.70 = 20,252.15 : x
  2. Step 2: Convert to fraction form
    51,395.03/77,121.70 = 20,252.15/x
  3. Step 3: Cross multiply
    51,395.03x = 77,121.70 × 20,252.15
  4. Step 4: Simplify right side
    51,395.03x = 1,561,879,749.79
  5. Step 5: Solve for x
    x = 1,561,879,749.79/51,395.03
  6. Step 6: Final answer
    x = 30,389.71

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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.