Home / 78,485,217.20-117,769,816.20-33,051,604.40

Finding the Fourth Proportional to 78,485,217.20, 117,769,816.20 and 33,051,604.40

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Solution

The fourth proportional to 78,485,217.20, 117,769,816.20 and 33,051,604.40 is: 49,595,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,485,217.20 : 117,769,816.20 = 33,051,604.40 : x
  2. Step 2: Convert to fraction form
    78,485,217.20/117,769,816.20 = 33,051,604.40/x
  3. Step 3: Cross multiply
    78,485,217.20x = 117,769,816.20 × 33,051,604.40
  4. Step 4: Simplify right side
    78,485,217.20x = 3,892,481,375,303,111
  5. Step 5: Solve for x
    x = 3,892,481,375,303,111/78,485,217.20
  6. Step 6: Final answer
    x = 49,595,089.55

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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.