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Finding the Fourth Proportional to 66,230.82, 91,310.76 and 54,858.42

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Solution

The fourth proportional to 66,230.82, 91,310.76 and 54,858.42 is: 75,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,230.82 : 91,310.76 = 54,858.42 : x
  2. Step 2: Convert to fraction form
    66,230.82/91,310.76 = 54,858.42/x
  3. Step 3: Cross multiply
    66,230.82x = 91,310.76 × 54,858.42
  4. Step 4: Simplify right side
    66,230.82x = 5,009,164,022.60
  5. Step 5: Solve for x
    x = 5,009,164,022.60/66,230.82
  6. Step 6: Final answer
    x = 75,631.92

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1.5x scale

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.