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Finding the Fourth Proportional to 54,064.96, 81,096.48 and 17,128

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Solution

The fourth proportional to 54,064.96, 81,096.48 and 17,128 is: 25,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,064.96 : 81,096.48 = 17,128 : x
  2. Step 2: Convert to fraction form
    54,064.96/81,096.48 = 17,128/x
  3. Step 3: Cross multiply
    54,064.96x = 81,096.48 × 17,128
  4. Step 4: Simplify right side
    54,064.96x = 1,389,020,509.44
  5. Step 5: Solve for x
    x = 1,389,020,509.44/54,064.96
  6. Step 6: Final answer
    x = 25,691.70

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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.