Home / 51,868.21-77,756.16-20,271.09

Finding the Fourth Proportional to 51,868.21, 77,756.16 and 20,271.09

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Solution

The fourth proportional to 51,868.21, 77,756.16 and 20,271.09 is: 30,388.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,868.21 : 77,756.16 = 20,271.09 : x
  2. Step 2: Convert to fraction form
    51,868.21/77,756.16 = 20,271.09/x
  3. Step 3: Cross multiply
    51,868.21x = 77,756.16 × 20,271.09
  4. Step 4: Simplify right side
    51,868.21x = 1,576,201,990.63
  5. Step 5: Solve for x
    x = 1,576,201,990.63/51,868.21
  6. Step 6: Final answer
    x = 30,388.59

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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.