Home / 90,775.68-136,163.44-28,451.04

Finding the Fourth Proportional to 90,775.68, 136,163.44 and 28,451.04

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Solution

The fourth proportional to 90,775.68, 136,163.44 and 28,451.04 is: 42,676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,775.68 : 136,163.44 = 28,451.04 : x
  2. Step 2: Convert to fraction form
    90,775.68/136,163.44 = 28,451.04/x
  3. Step 3: Cross multiply
    90,775.68x = 136,163.44 × 28,451.04
  4. Step 4: Simplify right side
    90,775.68x = 3,873,991,477.98
  5. Step 5: Solve for x
    x = 3,873,991,477.98/90,775.68
  6. Step 6: Final answer
    x = 42,676.53

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Double scale
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Similar ratio
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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.