Home / 81,928.20-112,990.26-63,995.40

Finding the Fourth Proportional to 81,928.20, 112,990.26 and 63,995.40

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Solution

The fourth proportional to 81,928.20, 112,990.26 and 63,995.40 is: 88,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,928.20 : 112,990.26 = 63,995.40 : x
  2. Step 2: Convert to fraction form
    81,928.20/112,990.26 = 63,995.40/x
  3. Step 3: Cross multiply
    81,928.20x = 112,990.26 × 63,995.40
  4. Step 4: Simplify right side
    81,928.20x = 7,230,856,884.80
  5. Step 5: Solve for x
    x = 7,230,856,884.80/81,928.20
  6. Step 6: Final answer
    x = 88,258.46

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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.