Home / 81,786.32-112,866.94-49,972.76

Finding the Fourth Proportional to 81,786.32, 112,866.94 and 49,972.76

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Solution

The fourth proportional to 81,786.32, 112,866.94 and 49,972.76 is: 68,963.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.32 : 112,866.94 = 49,972.76 : x
  2. Step 2: Convert to fraction form
    81,786.32/112,866.94 = 49,972.76/x
  3. Step 3: Cross multiply
    81,786.32x = 112,866.94 × 49,972.76
  4. Step 4: Simplify right side
    81,786.32x = 5,640,271,690.36
  5. Step 5: Solve for x
    x = 5,640,271,690.36/81,786.32
  6. Step 6: Final answer
    x = 68,963.51

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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.