Home / 90,431.96-135,604.20-31,246.88

Finding the Fourth Proportional to 90,431.96, 135,604.20 and 31,246.88

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Solution

The fourth proportional to 90,431.96, 135,604.20 and 31,246.88 is: 46,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,431.96 : 135,604.20 = 31,246.88 : x
  2. Step 2: Convert to fraction form
    90,431.96/135,604.20 = 31,246.88/x
  3. Step 3: Cross multiply
    90,431.96x = 135,604.20 × 31,246.88
  4. Step 4: Simplify right side
    90,431.96x = 4,237,208,164.90
  5. Step 5: Solve for x
    x = 4,237,208,164.90/90,431.96
  6. Step 6: Final answer
    x = 46,855.21

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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.