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Finding the Fourth Proportional to 81,505.44, 122,258.16 and 53,796.96

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Solution

The fourth proportional to 81,505.44, 122,258.16 and 53,796.96 is: 80,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,505.44 : 122,258.16 = 53,796.96 : x
  2. Step 2: Convert to fraction form
    81,505.44/122,258.16 = 53,796.96/x
  3. Step 3: Cross multiply
    81,505.44x = 122,258.16 × 53,796.96
  4. Step 4: Simplify right side
    81,505.44x = 6,577,117,343.19
  5. Step 5: Solve for x
    x = 6,577,117,343.19/81,505.44
  6. Step 6: Final answer
    x = 80,695.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.