Home / 57,906.21-86,843.67-20,461.32

Finding the Fourth Proportional to 57,906.21, 86,843.67 and 20,461.32

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Solution

The fourth proportional to 57,906.21, 86,843.67 and 20,461.32 is: 30,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906.21 : 86,843.67 = 20,461.32 : x
  2. Step 2: Convert to fraction form
    57,906.21/86,843.67 = 20,461.32/x
  3. Step 3: Cross multiply
    57,906.21x = 86,843.67 × 20,461.32
  4. Step 4: Simplify right side
    57,906.21x = 1,776,936,121.84
  5. Step 5: Solve for x
    x = 1,776,936,121.84/57,906.21
  6. Step 6: Final answer
    x = 30,686.45

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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.