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Finding the Fourth Proportional to 81,104.64, 111,923.60 and 45,293.73

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Solution

The fourth proportional to 81,104.64, 111,923.60 and 45,293.73 is: 62,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.64 : 111,923.60 = 45,293.73 : x
  2. Step 2: Convert to fraction form
    81,104.64/111,923.60 = 45,293.73/x
  3. Step 3: Cross multiply
    81,104.64x = 111,923.60 × 45,293.73
  4. Step 4: Simplify right side
    81,104.64x = 5,069,437,319.03
  5. Step 5: Solve for x
    x = 5,069,437,319.03/81,104.64
  6. Step 6: Final answer
    x = 62,504.90

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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.