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Finding the Fourth Proportional to 79,603,900.80, 119,405,851.20 and 25,751,212.80

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Solution

The fourth proportional to 79,603,900.80, 119,405,851.20 and 25,751,212.80 is: 38,626,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,603,900.80 : 119,405,851.20 = 25,751,212.80 : x
  2. Step 2: Convert to fraction form
    79,603,900.80/119,405,851.20 = 25,751,212.80/x
  3. Step 3: Cross multiply
    79,603,900.80x = 119,405,851.20 × 25,751,212.80
  4. Step 4: Simplify right side
    79,603,900.80x = 3,074,845,483,816,335.50
  5. Step 5: Solve for x
    x = 3,074,845,483,816,335.50/79,603,900.80
  6. Step 6: Final answer
    x = 38,626,819.20

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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.