Home / 90,245.31-135,366.33-31,079.67

Finding the Fourth Proportional to 90,245.31, 135,366.33 and 31,079.67

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Solution

The fourth proportional to 90,245.31, 135,366.33 and 31,079.67 is: 46,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,245.31 : 135,366.33 = 31,079.67 : x
  2. Step 2: Convert to fraction form
    90,245.31/135,366.33 = 31,079.67/x
  3. Step 3: Cross multiply
    90,245.31x = 135,366.33 × 31,079.67
  4. Step 4: Simplify right side
    90,245.31x = 4,207,140,865.51
  5. Step 5: Solve for x
    x = 4,207,140,865.51/90,245.31
  6. Step 6: Final answer
    x = 46,618.94

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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.