Home / 87,285.09-120,453.43-49,559.34

Finding the Fourth Proportional to 87,285.09, 120,453.43 and 49,559.34

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Solution

The fourth proportional to 87,285.09, 120,453.43 and 49,559.34 is: 68,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,285.09 : 120,453.43 = 49,559.34 : x
  2. Step 2: Convert to fraction form
    87,285.09/120,453.43 = 49,559.34/x
  3. Step 3: Cross multiply
    87,285.09x = 120,453.43 × 49,559.34
  4. Step 4: Simplify right side
    87,285.09x = 5,969,592,912.26
  5. Step 5: Solve for x
    x = 5,969,592,912.26/87,285.09
  6. Step 6: Final answer
    x = 68,391.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.