Home / 90,478.26-135,674.22-40,558.74

Finding the Fourth Proportional to 90,478.26, 135,674.22 and 40,558.74

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Solution

The fourth proportional to 90,478.26, 135,674.22 and 40,558.74 is: 60,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,478.26 : 135,674.22 = 40,558.74 : x
  2. Step 2: Convert to fraction form
    90,478.26/135,674.22 = 40,558.74/x
  3. Step 3: Cross multiply
    90,478.26x = 135,674.22 × 40,558.74
  4. Step 4: Simplify right side
    90,478.26x = 5,502,775,413.68
  5. Step 5: Solve for x
    x = 5,502,775,413.68/90,478.26
  6. Step 6: Final answer
    x = 60,818.76

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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.