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Finding the Fourth Proportional to 66,502.59, 91,775.78 and 36,289.57

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Solution

The fourth proportional to 66,502.59, 91,775.78 and 36,289.57 is: 50,080.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,502.59 : 91,775.78 = 36,289.57 : x
  2. Step 2: Convert to fraction form
    66,502.59/91,775.78 = 36,289.57/x
  3. Step 3: Cross multiply
    66,502.59x = 91,775.78 × 36,289.57
  4. Step 4: Simplify right side
    66,502.59x = 3,330,503,453.90
  5. Step 5: Solve for x
    x = 3,330,503,453.90/66,502.59
  6. Step 6: Final answer
    x = 50,080.81

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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.