Home / 82,361.12-113,616.60-55,138.28

Finding the Fourth Proportional to 82,361.12, 113,616.60 and 55,138.28

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Solution

The fourth proportional to 82,361.12, 113,616.60 and 55,138.28 is: 76,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,361.12 : 113,616.60 = 55,138.28 : x
  2. Step 2: Convert to fraction form
    82,361.12/113,616.60 = 55,138.28/x
  3. Step 3: Cross multiply
    82,361.12x = 113,616.60 × 55,138.28
  4. Step 4: Simplify right side
    82,361.12x = 6,264,623,903.45
  5. Step 5: Solve for x
    x = 6,264,623,903.45/82,361.12
  6. Step 6: Final answer
    x = 76,062.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.