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Finding the Fourth Proportional to 66,201.32, 91,270.05 and 54,828.92

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Solution

The fourth proportional to 66,201.32, 91,270.05 and 54,828.92 is: 75,591.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,201.32 : 91,270.05 = 54,828.92 : x
  2. Step 2: Convert to fraction form
    66,201.32/91,270.05 = 54,828.92/x
  3. Step 3: Cross multiply
    66,201.32x = 91,270.05 × 54,828.92
  4. Step 4: Simplify right side
    66,201.32x = 5,004,238,269.85
  5. Step 5: Solve for x
    x = 5,004,238,269.85/66,201.32
  6. Step 6: Final answer
    x = 75,591.22

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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.