Home / 85,958.70-128,932.11-26,788.74

Finding the Fourth Proportional to 85,958.70, 128,932.11 and 26,788.74

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Solution

The fourth proportional to 85,958.70, 128,932.11 and 26,788.74 is: 40,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,958.70 : 128,932.11 = 26,788.74 : x
  2. Step 2: Convert to fraction form
    85,958.70/128,932.11 = 26,788.74/x
  3. Step 3: Cross multiply
    85,958.70x = 128,932.11 × 26,788.74
  4. Step 4: Simplify right side
    85,958.70x = 3,453,928,772.44
  5. Step 5: Solve for x
    x = 3,453,928,772.44/85,958.70
  6. Step 6: Final answer
    x = 40,181.26

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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.