Home / 81,555.26-112,581.57-76,448.44

Finding the Fourth Proportional to 81,555.26, 112,581.57 and 76,448.44

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Solution

The fourth proportional to 81,555.26, 112,581.57 and 76,448.44 is: 105,531.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,555.26 : 112,581.57 = 76,448.44 : x
  2. Step 2: Convert to fraction form
    81,555.26/112,581.57 = 76,448.44/x
  3. Step 3: Cross multiply
    81,555.26x = 112,581.57 × 76,448.44
  4. Step 4: Simplify right side
    81,555.26x = 8,606,685,611.65
  5. Step 5: Solve for x
    x = 8,606,685,611.65/81,555.26
  6. Step 6: Final answer
    x = 105,531.95

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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.