Home / 81,775.44-112,860.56-49,937.64

Finding the Fourth Proportional to 81,775.44, 112,860.56 and 49,937.64

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Solution

The fourth proportional to 81,775.44, 112,860.56 and 49,937.64 is: 68,920.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,775.44 : 112,860.56 = 49,937.64 : x
  2. Step 2: Convert to fraction form
    81,775.44/112,860.56 = 49,937.64/x
  3. Step 3: Cross multiply
    81,775.44x = 112,860.56 × 49,937.64
  4. Step 4: Simplify right side
    81,775.44x = 5,635,990,015.48
  5. Step 5: Solve for x
    x = 5,635,990,015.48/81,775.44
  6. Step 6: Final answer
    x = 68,920.33

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1.5x scale

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.