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Finding the Fourth Proportional to 65,002,597.20, 97,503,895.80 and 21,857,461.20

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Solution

The fourth proportional to 65,002,597.20, 97,503,895.80 and 21,857,461.20 is: 32,786,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,002,597.20 : 97,503,895.80 = 21,857,461.20 : x
  2. Step 2: Convert to fraction form
    65,002,597.20/97,503,895.80 = 21,857,461.20/x
  3. Step 3: Cross multiply
    65,002,597.20x = 97,503,895.80 × 21,857,461.20
  4. Step 4: Simplify right side
    65,002,597.20x = 2,131,187,619,297,342.75
  5. Step 5: Solve for x
    x = 2,131,187,619,297,342.75/65,002,597.20
  6. Step 6: Final answer
    x = 32,786,191.80

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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.