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Finding the Fourth Proportional to 54,459.70, 81,705.96 and 19,394.80

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Solution

The fourth proportional to 54,459.70, 81,705.96 and 19,394.80 is: 29,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,459.70 : 81,705.96 = 19,394.80 : x
  2. Step 2: Convert to fraction form
    54,459.70/81,705.96 = 19,394.80/x
  3. Step 3: Cross multiply
    54,459.70x = 81,705.96 × 19,394.80
  4. Step 4: Simplify right side
    54,459.70x = 1,584,670,753.01
  5. Step 5: Solve for x
    x = 1,584,670,753.01/54,459.70
  6. Step 6: Final answer
    x = 29,098.04

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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.