Home / 90,240.31-135,358.84-31,074.67

Finding the Fourth Proportional to 90,240.31, 135,358.84 and 31,074.67

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Solution

The fourth proportional to 90,240.31, 135,358.84 and 31,074.67 is: 46,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,240.31 : 135,358.84 = 31,074.67 : x
  2. Step 2: Convert to fraction form
    90,240.31/135,358.84 = 31,074.67/x
  3. Step 3: Cross multiply
    90,240.31x = 135,358.84 × 31,074.67
  4. Step 4: Simplify right side
    90,240.31x = 4,206,231,284.58
  5. Step 5: Solve for x
    x = 4,206,231,284.58/90,240.31
  6. Step 6: Final answer
    x = 46,611.45

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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.