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Finding the Fourth Proportional to 80,352,783.60, 120,560,668.20 and 29,239,969.20

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Solution

The fourth proportional to 80,352,783.60, 120,560,668.20 and 29,239,969.20 is: 43,871,413.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,352,783.60 : 120,560,668.20 = 29,239,969.20 : x
  2. Step 2: Convert to fraction form
    80,352,783.60/120,560,668.20 = 29,239,969.20/x
  3. Step 3: Cross multiply
    80,352,783.60x = 120,560,668.20 × 29,239,969.20
  4. Step 4: Simplify right side
    80,352,783.60x = 3,525,190,224,899,419.50
  5. Step 5: Solve for x
    x = 3,525,190,224,899,419.50/80,352,783.60
  6. Step 6: Final answer
    x = 43,871,413.87

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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.