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Finding the Fourth Proportional to 66,656.66, 91,985.90 and 36,441.99

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Solution

The fourth proportional to 66,656.66, 91,985.90 and 36,441.99 is: 50,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,656.66 : 91,985.90 = 36,441.99 : x
  2. Step 2: Convert to fraction form
    66,656.66/91,985.90 = 36,441.99/x
  3. Step 3: Cross multiply
    66,656.66x = 91,985.90 × 36,441.99
  4. Step 4: Simplify right side
    66,656.66x = 3,352,149,065.73
  5. Step 5: Solve for x
    x = 3,352,149,065.73/66,656.66
  6. Step 6: Final answer
    x = 50,289.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.