Home / 90,338.64-135,515.52-31,174.80

Finding the Fourth Proportional to 90,338.64, 135,515.52 and 31,174.80

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Solution

The fourth proportional to 90,338.64, 135,515.52 and 31,174.80 is: 46,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,338.64 : 135,515.52 = 31,174.80 : x
  2. Step 2: Convert to fraction form
    90,338.64/135,515.52 = 31,174.80/x
  3. Step 3: Cross multiply
    90,338.64x = 135,515.52 × 31,174.80
  4. Step 4: Simplify right side
    90,338.64x = 4,224,669,232.90
  5. Step 5: Solve for x
    x = 4,224,669,232.90/90,338.64
  6. Step 6: Final answer
    x = 46,764.81

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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.