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Finding the Fourth Proportional to 66,396.60, 99,519.57 and 41,447.79

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Solution

The fourth proportional to 66,396.60, 99,519.57 and 41,447.79 is: 62,124.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,396.60 : 99,519.57 = 41,447.79 : x
  2. Step 2: Convert to fraction form
    66,396.60/99,519.57 = 41,447.79/x
  3. Step 3: Cross multiply
    66,396.60x = 99,519.57 × 41,447.79
  4. Step 4: Simplify right side
    66,396.60x = 4,124,866,238.25
  5. Step 5: Solve for x
    x = 4,124,866,238.25/66,396.60
  6. Step 6: Final answer
    x = 62,124.66

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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.