Home / 78,485,218.70-117,769,818.45-33,051,605.90

Finding the Fourth Proportional to 78,485,218.70, 117,769,818.45 and 33,051,605.90

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Solution

The fourth proportional to 78,485,218.70, 117,769,818.45 and 33,051,605.90 is: 49,595,091.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,485,218.70 : 117,769,818.45 = 33,051,605.90 : x
  2. Step 2: Convert to fraction form
    78,485,218.70/117,769,818.45 = 33,051,605.90/x
  3. Step 3: Cross multiply
    78,485,218.70x = 117,769,818.45 × 33,051,605.90
  4. Step 4: Simplify right side
    78,485,218.70x = 3,892,481,626,323,949
  5. Step 5: Solve for x
    x = 3,892,481,626,323,949/78,485,218.70
  6. Step 6: Final answer
    x = 49,595,091.80

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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.