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Finding the Fourth Proportional to 73,821,781.20, 110,699,494.20 and 28,368,469.20

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Solution

The fourth proportional to 73,821,781.20, 110,699,494.20 and 28,368,469.20 is: 42,539,954.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,821,781.20 : 110,699,494.20 = 28,368,469.20 : x
  2. Step 2: Convert to fraction form
    73,821,781.20/110,699,494.20 = 28,368,469.20/x
  3. Step 3: Cross multiply
    73,821,781.20x = 110,699,494.20 × 28,368,469.20
  4. Step 4: Simplify right side
    73,821,781.20x = 3,140,375,191,668,278.50
  5. Step 5: Solve for x
    x = 3,140,375,191,668,278.50/73,821,781.20
  6. Step 6: Final answer
    x = 42,539,954.21

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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.