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Finding the Fourth Proportional to 66,309.89, 99,465.89 and 36,914.56

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Solution

The fourth proportional to 66,309.89, 99,465.89 and 36,914.56 is: 55,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,309.89 : 99,465.89 = 36,914.56 : x
  2. Step 2: Convert to fraction form
    66,309.89/99,465.89 = 36,914.56/x
  3. Step 3: Cross multiply
    66,309.89x = 99,465.89 × 36,914.56
  4. Step 4: Simplify right side
    66,309.89x = 3,671,739,504.12
  5. Step 5: Solve for x
    x = 3,671,739,504.12/66,309.89
  6. Step 6: Final answer
    x = 55,372.43

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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.