Home / 81,619.88-112,635.83-47,651.92

Finding the Fourth Proportional to 81,619.88, 112,635.83 and 47,651.92

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Solution

The fourth proportional to 81,619.88, 112,635.83 and 47,651.92 is: 65,759.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619.88 : 112,635.83 = 47,651.92 : x
  2. Step 2: Convert to fraction form
    81,619.88/112,635.83 = 47,651.92/x
  3. Step 3: Cross multiply
    81,619.88x = 112,635.83 × 47,651.92
  4. Step 4: Simplify right side
    81,619.88x = 5,367,313,397.83
  5. Step 5: Solve for x
    x = 5,367,313,397.83/81,619.88
  6. Step 6: Final answer
    x = 65,759.88

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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.