Home / 55,685.18-76,844.61-31,485.75

Finding the Fourth Proportional to 55,685.18, 76,844.61 and 31,485.75

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Solution

The fourth proportional to 55,685.18, 76,844.61 and 31,485.75 is: 43,449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,685.18 : 76,844.61 = 31,485.75 : x
  2. Step 2: Convert to fraction form
    55,685.18/76,844.61 = 31,485.75/x
  3. Step 3: Cross multiply
    55,685.18x = 76,844.61 × 31,485.75
  4. Step 4: Simplify right side
    55,685.18x = 2,419,510,179.31
  5. Step 5: Solve for x
    x = 2,419,510,179.31/55,685.18
  6. Step 6: Final answer
    x = 43,449.81

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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.