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Finding the Fourth Proportional to 81,760.53, 112,828.50 and 45,956.60

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Solution

The fourth proportional to 81,760.53, 112,828.50 and 45,956.60 is: 63,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,760.53 : 112,828.50 = 45,956.60 : x
  2. Step 2: Convert to fraction form
    81,760.53/112,828.50 = 45,956.60/x
  3. Step 3: Cross multiply
    81,760.53x = 112,828.50 × 45,956.60
  4. Step 4: Simplify right side
    81,760.53x = 5,185,213,678.96
  5. Step 5: Solve for x
    x = 5,185,213,678.96/81,760.53
  6. Step 6: Final answer
    x = 63,419.52

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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.