Home / 78,436,031.14-117,517,698.83-55,043,160.84

Finding the Fourth Proportional to 78,436,031.14, 117,517,698.83 and 55,043,160.84

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Solution

The fourth proportional to 78,436,031.14, 117,517,698.83 and 55,043,160.84 is: 82,469,057.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436,031.14 : 117,517,698.83 = 55,043,160.84 : x
  2. Step 2: Convert to fraction form
    78,436,031.14/117,517,698.83 = 55,043,160.84/x
  3. Step 3: Cross multiply
    78,436,031.14x = 117,517,698.83 × 55,043,160.84
  4. Step 4: Simplify right side
    78,436,031.14x = 6,468,545,598,411,846
  5. Step 5: Solve for x
    x = 6,468,545,598,411,846/78,436,031.14
  6. Step 6: Final answer
    x = 82,469,057.96

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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.