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Finding the Fourth Proportional to 54,486.96, 81,710.73 and 19,419.63

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Solution

The fourth proportional to 54,486.96, 81,710.73 and 19,419.63 is: 29,122.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.96 : 81,710.73 = 19,419.63 : x
  2. Step 2: Convert to fraction form
    54,486.96/81,710.73 = 19,419.63/x
  3. Step 3: Cross multiply
    54,486.96x = 81,710.73 × 19,419.63
  4. Step 4: Simplify right side
    54,486.96x = 1,586,792,143.63
  5. Step 5: Solve for x
    x = 1,586,792,143.63/54,486.96
  6. Step 6: Final answer
    x = 29,122.42

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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.