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Finding the Fourth Proportional to 66,515.56, 91,790.10 and 36,301.48

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Solution

The fourth proportional to 66,515.56, 91,790.10 and 36,301.48 is: 50,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,515.56 : 91,790.10 = 36,301.48 : x
  2. Step 2: Convert to fraction form
    66,515.56/91,790.10 = 36,301.48/x
  3. Step 3: Cross multiply
    66,515.56x = 91,790.10 × 36,301.48
  4. Step 4: Simplify right side
    66,515.56x = 3,332,116,479.35
  5. Step 5: Solve for x
    x = 3,332,116,479.35/66,515.56
  6. Step 6: Final answer
    x = 50,095.29

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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.