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Finding the Fourth Proportional to 81,739.88, 112,794.90 and 45,924.20

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Solution

The fourth proportional to 81,739.88, 112,794.90 and 45,924.20 is: 63,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.88 : 112,794.90 = 45,924.20 : x
  2. Step 2: Convert to fraction form
    81,739.88/112,794.90 = 45,924.20/x
  3. Step 3: Cross multiply
    81,739.88x = 112,794.90 × 45,924.20
  4. Step 4: Simplify right side
    81,739.88x = 5,180,015,546.58
  5. Step 5: Solve for x
    x = 5,180,015,546.58/81,739.88
  6. Step 6: Final answer
    x = 63,371.95

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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.