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Finding the Fourth Proportional to 86,959.58, 130,383.21 and 27,775.58

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Solution

The fourth proportional to 86,959.58, 130,383.21 and 27,775.58 is: 41,645.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,959.58 : 130,383.21 = 27,775.58 : x
  2. Step 2: Convert to fraction form
    86,959.58/130,383.21 = 27,775.58/x
  3. Step 3: Cross multiply
    86,959.58x = 130,383.21 × 27,775.58
  4. Step 4: Simplify right side
    86,959.58x = 3,621,469,280.01
  5. Step 5: Solve for x
    x = 3,621,469,280.01/86,959.58
  6. Step 6: Final answer
    x = 41,645.43

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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.