Home / 81,944.88-122,946.76-28,644.64

Finding the Fourth Proportional to 81,944.88, 122,946.76 and 28,644.64

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Solution

The fourth proportional to 81,944.88, 122,946.76 and 28,644.64 is: 42,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,944.88 : 122,946.76 = 28,644.64 : x
  2. Step 2: Convert to fraction form
    81,944.88/122,946.76 = 28,644.64/x
  3. Step 3: Cross multiply
    81,944.88x = 122,946.76 × 28,644.64
  4. Step 4: Simplify right side
    81,944.88x = 3,521,765,679.37
  5. Step 5: Solve for x
    x = 3,521,765,679.37/81,944.88
  6. Step 6: Final answer
    x = 42,977.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.