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Finding the Fourth Proportional to 74,122.88, 111,067.88 and 57,297.11

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Solution

The fourth proportional to 74,122.88, 111,067.88 and 57,297.11 is: 85,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,122.88 : 111,067.88 = 57,297.11 : x
  2. Step 2: Convert to fraction form
    74,122.88/111,067.88 = 57,297.11/x
  3. Step 3: Cross multiply
    74,122.88x = 111,067.88 × 57,297.11
  4. Step 4: Simplify right side
    74,122.88x = 6,363,868,958.74
  5. Step 5: Solve for x
    x = 6,363,868,958.74/74,122.88
  6. Step 6: Final answer
    x = 85,855.67

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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.