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Finding the Fourth Proportional to 64,821, 97,247.90 and 18,073.88

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Solution

The fourth proportional to 64,821, 97,247.90 and 18,073.88 is: 27,115.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,821 : 97,247.90 = 18,073.88 : x
  2. Step 2: Convert to fraction form
    64,821/97,247.90 = 18,073.88/x
  3. Step 3: Cross multiply
    64,821x = 97,247.90 × 18,073.88
  4. Step 4: Simplify right side
    64,821x = 1,757,646,433.80
  5. Step 5: Solve for x
    x = 1,757,646,433.80/64,821
  6. Step 6: Final answer
    x = 27,115.39

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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.