Home / 76,610.50-114,915.80-20,450.84

Finding the Fourth Proportional to 76,610.50, 114,915.80 and 20,450.84

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Solution

The fourth proportional to 76,610.50, 114,915.80 and 20,450.84 is: 30,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,610.50 : 114,915.80 = 20,450.84 : x
  2. Step 2: Convert to fraction form
    76,610.50/114,915.80 = 20,450.84/x
  3. Step 3: Cross multiply
    76,610.50x = 114,915.80 × 20,450.84
  4. Step 4: Simplify right side
    76,610.50x = 2,350,124,639.27
  5. Step 5: Solve for x
    x = 2,350,124,639.27/76,610.50
  6. Step 6: Final answer
    x = 30,676.27

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1.5x scale

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.