Home / 84,724-127,083.94-20,682.60

Finding the Fourth Proportional to 84,724, 127,083.94 and 20,682.60

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Solution

The fourth proportional to 84,724, 127,083.94 and 20,682.60 is: 31,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,724 : 127,083.94 = 20,682.60 : x
  2. Step 2: Convert to fraction form
    84,724/127,083.94 = 20,682.60/x
  3. Step 3: Cross multiply
    84,724x = 127,083.94 × 20,682.60
  4. Step 4: Simplify right side
    84,724x = 2,628,426,297.44
  5. Step 5: Solve for x
    x = 2,628,426,297.44/84,724
  6. Step 6: Final answer
    x = 31,023.40

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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.