Home / 90,544.33-135,840.65-31,379.95

Finding the Fourth Proportional to 90,544.33, 135,840.65 and 31,379.95

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Solution

The fourth proportional to 90,544.33, 135,840.65 and 31,379.95 is: 47,078.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,544.33 : 135,840.65 = 31,379.95 : x
  2. Step 2: Convert to fraction form
    90,544.33/135,840.65 = 31,379.95/x
  3. Step 3: Cross multiply
    90,544.33x = 135,840.65 × 31,379.95
  4. Step 4: Simplify right side
    90,544.33x = 4,262,672,308.47
  5. Step 5: Solve for x
    x = 4,262,672,308.47/90,544.33
  6. Step 6: Final answer
    x = 47,078.29

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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.