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Finding the Fourth Proportional to 64,582,290.80, 96,763,813.80 and 38,969,481.20

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Solution

The fourth proportional to 64,582,290.80, 96,763,813.80 and 38,969,481.20 is: 58,388,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,582,290.80 : 96,763,813.80 = 38,969,481.20 : x
  2. Step 2: Convert to fraction form
    64,582,290.80/96,763,813.80 = 38,969,481.20/x
  3. Step 3: Cross multiply
    64,582,290.80x = 96,763,813.80 × 38,969,481.20
  4. Step 4: Simplify right side
    64,582,290.80x = 3,770,835,622,719,400.50
  5. Step 5: Solve for x
    x = 3,770,835,622,719,400.50/64,582,290.80
  6. Step 6: Final answer
    x = 58,388,074.75

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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.