Home / 78,269,371.26-117,418,489.83-25,749,998.28

Finding the Fourth Proportional to 78,269,371.26, 117,418,489.83 and 25,749,998.28

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Solution

The fourth proportional to 78,269,371.26, 117,418,489.83 and 25,749,998.28 is: 38,629,745.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,269,371.26 : 117,418,489.83 = 25,749,998.28 : x
  2. Step 2: Convert to fraction form
    78,269,371.26/117,418,489.83 = 25,749,998.28/x
  3. Step 3: Cross multiply
    78,269,371.26x = 117,418,489.83 × 25,749,998.28
  4. Step 4: Simplify right side
    78,269,371.26x = 3,023,525,911,162,697.50
  5. Step 5: Solve for x
    x = 3,023,525,911,162,697.50/78,269,371.26
  6. Step 6: Final answer
    x = 38,629,745.74

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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.