Home / 78,436,024.63-117,517,689.07-55,043,154.34

Finding the Fourth Proportional to 78,436,024.63, 117,517,689.07 and 55,043,154.34

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Solution

The fourth proportional to 78,436,024.63, 117,517,689.07 and 55,043,154.34 is: 82,469,048.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436,024.63 : 117,517,689.07 = 55,043,154.34 : x
  2. Step 2: Convert to fraction form
    78,436,024.63/117,517,689.07 = 55,043,154.34/x
  3. Step 3: Cross multiply
    78,436,024.63x = 117,517,689.07 × 55,043,154.34
  4. Step 4: Simplify right side
    78,436,024.63x = 6,468,544,297,059,198
  5. Step 5: Solve for x
    x = 6,468,544,297,059,198/78,436,024.63
  6. Step 6: Final answer
    x = 82,469,048.21

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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.