Home / 90,379.64-135,479.21-31,177.54

Finding the Fourth Proportional to 90,379.64, 135,479.21 and 31,177.54

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Solution

The fourth proportional to 90,379.64, 135,479.21 and 31,177.54 is: 46,735.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,379.64 : 135,479.21 = 31,177.54 : x
  2. Step 2: Convert to fraction form
    90,379.64/135,479.21 = 31,177.54/x
  3. Step 3: Cross multiply
    90,379.64x = 135,479.21 × 31,177.54
  4. Step 4: Simplify right side
    90,379.64x = 4,223,908,488.94
  5. Step 5: Solve for x
    x = 4,223,908,488.94/90,379.64
  6. Step 6: Final answer
    x = 46,735.18

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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.