Home / 90,348.36-135,531.78-31,183.86

Finding the Fourth Proportional to 90,348.36, 135,531.78 and 31,183.86

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Solution

The fourth proportional to 90,348.36, 135,531.78 and 31,183.86 is: 46,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,348.36 : 135,531.78 = 31,183.86 : x
  2. Step 2: Convert to fraction form
    90,348.36/135,531.78 = 31,183.86/x
  3. Step 3: Cross multiply
    90,348.36x = 135,531.78 × 31,183.86
  4. Step 4: Simplify right side
    90,348.36x = 4,226,404,053.07
  5. Step 5: Solve for x
    x = 4,226,404,053.07/90,348.36
  6. Step 6: Final answer
    x = 46,778.98

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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.