Home / 90,519.96-135,583.38-55,353

Finding the Fourth Proportional to 90,519.96, 135,583.38 and 55,353

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Solution

The fourth proportional to 90,519.96, 135,583.38 and 55,353 is: 82,909.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,519.96 : 135,583.38 = 55,353 : x
  2. Step 2: Convert to fraction form
    90,519.96/135,583.38 = 55,353/x
  3. Step 3: Cross multiply
    90,519.96x = 135,583.38 × 55,353
  4. Step 4: Simplify right side
    90,519.96x = 7,504,946,833.14
  5. Step 5: Solve for x
    x = 7,504,946,833.14/90,519.96
  6. Step 6: Final answer
    x = 82,909.30

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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.