Home / 90,450.12-135,675.19-31,253.50

Finding the Fourth Proportional to 90,450.12, 135,675.19 and 31,253.50

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Solution

The fourth proportional to 90,450.12, 135,675.19 and 31,253.50 is: 46,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,450.12 : 135,675.19 = 31,253.50 : x
  2. Step 2: Convert to fraction form
    90,450.12/135,675.19 = 31,253.50/x
  3. Step 3: Cross multiply
    90,450.12x = 135,675.19 × 31,253.50
  4. Step 4: Simplify right side
    90,450.12x = 4,240,324,550.67
  5. Step 5: Solve for x
    x = 4,240,324,550.67/90,450.12
  6. Step 6: Final answer
    x = 46,880.25

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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.