Home / 79,211,331.66-118,815,142.64-20,923,077.56

Finding the Fourth Proportional to 79,211,331.66, 118,815,142.64 and 20,923,077.56

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Solution

The fourth proportional to 79,211,331.66, 118,815,142.64 and 20,923,077.56 is: 31,384,126.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,331.66 : 118,815,142.64 = 20,923,077.56 : x
  2. Step 2: Convert to fraction form
    79,211,331.66/118,815,142.64 = 20,923,077.56/x
  3. Step 3: Cross multiply
    79,211,331.66x = 118,815,142.64 × 20,923,077.56
  4. Step 4: Simplify right side
    79,211,331.66x = 2,485,978,444,584,510.50
  5. Step 5: Solve for x
    x = 2,485,978,444,584,510.50/79,211,331.66
  6. Step 6: Final answer
    x = 31,384,126.39

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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.