Home / 76,859.03-115,310.87-31,872.14

Finding the Fourth Proportional to 76,859.03, 115,310.87 and 31,872.14

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Solution

The fourth proportional to 76,859.03, 115,310.87 and 31,872.14 is: 47,817.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,859.03 : 115,310.87 = 31,872.14 : x
  2. Step 2: Convert to fraction form
    76,859.03/115,310.87 = 31,872.14/x
  3. Step 3: Cross multiply
    76,859.03x = 115,310.87 × 31,872.14
  4. Step 4: Simplify right side
    76,859.03x = 3,675,203,615.61
  5. Step 5: Solve for x
    x = 3,675,203,615.61/76,859.03
  6. Step 6: Final answer
    x = 47,817.46

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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.