Home / 68,004.64-102,021.36-21,261.04

Finding the Fourth Proportional to 68,004.64, 102,021.36 and 21,261.04

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Solution

The fourth proportional to 68,004.64, 102,021.36 and 21,261.04 is: 31,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,004.64 : 102,021.36 = 21,261.04 : x
  2. Step 2: Convert to fraction form
    68,004.64/102,021.36 = 21,261.04/x
  3. Step 3: Cross multiply
    68,004.64x = 102,021.36 × 21,261.04
  4. Step 4: Simplify right side
    68,004.64x = 2,169,080,215.81
  5. Step 5: Solve for x
    x = 2,169,080,215.81/68,004.64
  6. Step 6: Final answer
    x = 31,896.06

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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.