Home / 40,672.45-61,003.05-12,611.80

Finding the Fourth Proportional to 40,672.45, 61,003.05 and 12,611.80

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Solution

The fourth proportional to 40,672.45, 61,003.05 and 12,611.80 is: 18,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,672.45 : 61,003.05 = 12,611.80 : x
  2. Step 2: Convert to fraction form
    40,672.45/61,003.05 = 12,611.80/x
  3. Step 3: Cross multiply
    40,672.45x = 61,003.05 × 12,611.80
  4. Step 4: Simplify right side
    40,672.45x = 769,358,265.99
  5. Step 5: Solve for x
    x = 769,358,265.99/40,672.45
  6. Step 6: Final answer
    x = 18,915.96

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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.