Home / 71,408.89-98,542.19-39,142.83

Finding the Fourth Proportional to 71,408.89, 98,542.19 and 39,142.83

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Solution

The fourth proportional to 71,408.89, 98,542.19 and 39,142.83 is: 54,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,408.89 : 98,542.19 = 39,142.83 : x
  2. Step 2: Convert to fraction form
    71,408.89/98,542.19 = 39,142.83/x
  3. Step 3: Cross multiply
    71,408.89x = 98,542.19 × 39,142.83
  4. Step 4: Simplify right side
    71,408.89x = 3,857,220,191.00
  5. Step 5: Solve for x
    x = 3,857,220,191.00/71,408.89
  6. Step 6: Final answer
    x = 54,015.97

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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.