Home / 81,811.56-112,910.22-49,973.88

Finding the Fourth Proportional to 81,811.56, 112,910.22 and 49,973.88

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Solution

The fourth proportional to 81,811.56, 112,910.22 and 49,973.88 is: 68,970.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.56 : 112,910.22 = 49,973.88 : x
  2. Step 2: Convert to fraction form
    81,811.56/112,910.22 = 49,973.88/x
  3. Step 3: Cross multiply
    81,811.56x = 112,910.22 × 49,973.88
  4. Step 4: Simplify right side
    81,811.56x = 5,642,561,785.05
  5. Step 5: Solve for x
    x = 5,642,561,785.05/81,811.56
  6. Step 6: Final answer
    x = 68,970.23

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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.