Home / 72,651,198.78-100,259,436.83-39,611,178.29

Finding the Fourth Proportional to 72,651,198.78, 100,259,436.83 and 39,611,178.29

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Solution

The fourth proportional to 72,651,198.78, 100,259,436.83 and 39,611,178.29 is: 54,663,852.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,651,198.78 : 100,259,436.83 = 39,611,178.29 : x
  2. Step 2: Convert to fraction form
    72,651,198.78/100,259,436.83 = 39,611,178.29/x
  3. Step 3: Cross multiply
    72,651,198.78x = 100,259,436.83 × 39,611,178.29
  4. Step 4: Simplify right side
    72,651,198.78x = 3,971,394,427,580,715
  5. Step 5: Solve for x
    x = 3,971,394,427,580,715/72,651,198.78
  6. Step 6: Final answer
    x = 54,663,852.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.