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Finding the Fourth Proportional to 66,464.20, 99,713.90 and 29,008.20

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Solution

The fourth proportional to 66,464.20, 99,713.90 and 29,008.20 is: 43,519.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,464.20 : 99,713.90 = 29,008.20 : x
  2. Step 2: Convert to fraction form
    66,464.20/99,713.90 = 29,008.20/x
  3. Step 3: Cross multiply
    66,464.20x = 99,713.90 × 29,008.20
  4. Step 4: Simplify right side
    66,464.20x = 2,892,520,753.98
  5. Step 5: Solve for x
    x = 2,892,520,753.98/66,464.20
  6. Step 6: Final answer
    x = 43,519.98

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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.