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Finding the Fourth Proportional to 71,994,909.20, 107,992,363.80 and 57,646,002.20

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Solution

The fourth proportional to 71,994,909.20, 107,992,363.80 and 57,646,002.20 is: 86,469,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994,909.20 : 107,992,363.80 = 57,646,002.20 : x
  2. Step 2: Convert to fraction form
    71,994,909.20/107,992,363.80 = 57,646,002.20/x
  3. Step 3: Cross multiply
    71,994,909.20x = 107,992,363.80 × 57,646,002.20
  4. Step 4: Simplify right side
    71,994,909.20x = 6,225,328,041,198,001
  5. Step 5: Solve for x
    x = 6,225,328,041,198,001/71,994,909.20
  6. Step 6: Final answer
    x = 86,469,003.30

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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.