Home / 81,750.39-112,816.28-49,485.75

Finding the Fourth Proportional to 81,750.39, 112,816.28 and 49,485.75

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Solution

The fourth proportional to 81,750.39, 112,816.28 and 49,485.75 is: 68,290.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,750.39 : 112,816.28 = 49,485.75 : x
  2. Step 2: Convert to fraction form
    81,750.39/112,816.28 = 49,485.75/x
  3. Step 3: Cross multiply
    81,750.39x = 112,816.28 × 49,485.75
  4. Step 4: Simplify right side
    81,750.39x = 5,582,798,351.72
  5. Step 5: Solve for x
    x = 5,582,798,351.72/81,750.39
  6. Step 6: Final answer
    x = 68,290.79

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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.