Home / 71,540.11-98,729.84-39,709.54

Finding the Fourth Proportional to 71,540.11, 98,729.84 and 39,709.54

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Solution

The fourth proportional to 71,540.11, 98,729.84 and 39,709.54 is: 54,801.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,540.11 : 98,729.84 = 39,709.54 : x
  2. Step 2: Convert to fraction form
    71,540.11/98,729.84 = 39,709.54/x
  3. Step 3: Cross multiply
    71,540.11x = 98,729.84 × 39,709.54
  4. Step 4: Simplify right side
    71,540.11x = 3,920,516,529.99
  5. Step 5: Solve for x
    x = 3,920,516,529.99/71,540.11
  6. Step 6: Final answer
    x = 54,801.66

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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.