Home / 78,756,729.80-118,099,665.30-30,218,451.80

Finding the Fourth Proportional to 78,756,729.80, 118,099,665.30 and 30,218,451.80

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Solution

The fourth proportional to 78,756,729.80, 118,099,665.30 and 30,218,451.80 is: 45,314,083.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756,729.80 : 118,099,665.30 = 30,218,451.80 : x
  2. Step 2: Convert to fraction form
    78,756,729.80/118,099,665.30 = 30,218,451.80/x
  3. Step 3: Cross multiply
    78,756,729.80x = 118,099,665.30 × 30,218,451.80
  4. Step 4: Simplify right side
    78,756,729.80x = 3,568,789,043,464,182.50
  5. Step 5: Solve for x
    x = 3,568,789,043,464,182.50/78,756,729.80
  6. Step 6: Final answer
    x = 45,314,083.67

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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.