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Finding the Fourth Proportional to 64,685,232.80, 97,004,229.60 and 21,555,843.20

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Solution

The fourth proportional to 64,685,232.80, 97,004,229.60 and 21,555,843.20 is: 32,325,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,685,232.80 : 97,004,229.60 = 21,555,843.20 : x
  2. Step 2: Convert to fraction form
    64,685,232.80/97,004,229.60 = 21,555,843.20/x
  3. Step 3: Cross multiply
    64,685,232.80x = 97,004,229.60 × 21,555,843.20
  4. Step 4: Simplify right side
    64,685,232.80x = 2,091,007,962,994,398.50
  5. Step 5: Solve for x
    x = 2,091,007,962,994,398.50/64,685,232.80
  6. Step 6: Final answer
    x = 32,325,893.75

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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.