Home / 75,915.30-113,877.12-31,546.54

Finding the Fourth Proportional to 75,915.30, 113,877.12 and 31,546.54

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Solution

The fourth proportional to 75,915.30, 113,877.12 and 31,546.54 is: 47,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,915.30 : 113,877.12 = 31,546.54 : x
  2. Step 2: Convert to fraction form
    75,915.30/113,877.12 = 31,546.54/x
  3. Step 3: Cross multiply
    75,915.30x = 113,877.12 × 31,546.54
  4. Step 4: Simplify right side
    75,915.30x = 3,592,429,121.16
  5. Step 5: Solve for x
    x = 3,592,429,121.16/75,915.30
  6. Step 6: Final answer
    x = 47,321.54

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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.