Home / 40,672.40-61,010.78-12,611.84

Finding the Fourth Proportional to 40,672.40, 61,010.78 and 12,611.84

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Solution

The fourth proportional to 40,672.40, 61,010.78 and 12,611.84 is: 18,918.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,672.40 : 61,010.78 = 12,611.84 : x
  2. Step 2: Convert to fraction form
    40,672.40/61,010.78 = 12,611.84/x
  3. Step 3: Cross multiply
    40,672.40x = 61,010.78 × 12,611.84
  4. Step 4: Simplify right side
    40,672.40x = 769,458,195.64
  5. Step 5: Solve for x
    x = 769,458,195.64/40,672.40
  6. Step 6: Final answer
    x = 18,918.44

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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.