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Finding the Fourth Proportional to 66,505.11, 91,776.72 and 36,290.19

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Solution

The fourth proportional to 66,505.11, 91,776.72 and 36,290.19 is: 50,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,505.11 : 91,776.72 = 36,290.19 : x
  2. Step 2: Convert to fraction form
    66,505.11/91,776.72 = 36,290.19/x
  3. Step 3: Cross multiply
    66,505.11x = 91,776.72 × 36,290.19
  4. Step 4: Simplify right side
    66,505.11x = 3,330,594,606.38
  5. Step 5: Solve for x
    x = 3,330,594,606.38/66,505.11
  6. Step 6: Final answer
    x = 50,080.28

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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.