Home / 51,989.49-77,984.21-20,414.43

Finding the Fourth Proportional to 51,989.49, 77,984.21 and 20,414.43

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Solution

The fourth proportional to 51,989.49, 77,984.21 and 20,414.43 is: 30,621.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,989.49 : 77,984.21 = 20,414.43 : x
  2. Step 2: Convert to fraction form
    51,989.49/77,984.21 = 20,414.43/x
  3. Step 3: Cross multiply
    51,989.49x = 77,984.21 × 20,414.43
  4. Step 4: Simplify right side
    51,989.49x = 1,592,003,196.15
  5. Step 5: Solve for x
    x = 1,592,003,196.15/51,989.49
  6. Step 6: Final answer
    x = 30,621.64

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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.