Home / 85,078.67-127,631.85-28,923.80

Finding the Fourth Proportional to 85,078.67, 127,631.85 and 28,923.80

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Solution

The fourth proportional to 85,078.67, 127,631.85 and 28,923.80 is: 43,390.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.67 : 127,631.85 = 28,923.80 : x
  2. Step 2: Convert to fraction form
    85,078.67/127,631.85 = 28,923.80/x
  3. Step 3: Cross multiply
    85,078.67x = 127,631.85 × 28,923.80
  4. Step 4: Simplify right side
    85,078.67x = 3,691,598,313.65
  5. Step 5: Solve for x
    x = 3,691,598,313.65/85,078.67
  6. Step 6: Final answer
    x = 43,390.41

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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.