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Finding the Fourth Proportional to 74,366,971.20, 111,550,456.80 and 50,180,500.80

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Solution

The fourth proportional to 74,366,971.20, 111,550,456.80 and 50,180,500.80 is: 75,270,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,366,971.20 : 111,550,456.80 = 50,180,500.80 : x
  2. Step 2: Convert to fraction form
    74,366,971.20/111,550,456.80 = 50,180,500.80/x
  3. Step 3: Cross multiply
    74,366,971.20x = 111,550,456.80 × 50,180,500.80
  4. Step 4: Simplify right side
    74,366,971.20x = 5,597,657,786,692,765
  5. Step 5: Solve for x
    x = 5,597,657,786,692,765/74,366,971.20
  6. Step 6: Final answer
    x = 75,270,751.20

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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.