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Finding the Fourth Proportional to 54,288, 81,416.38 and 18,740.08

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Solution

The fourth proportional to 54,288, 81,416.38 and 18,740.08 is: 28,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288 : 81,416.38 = 18,740.08 : x
  2. Step 2: Convert to fraction form
    54,288/81,416.38 = 18,740.08/x
  3. Step 3: Cross multiply
    54,288x = 81,416.38 × 18,740.08
  4. Step 4: Simplify right side
    54,288x = 1,525,749,474.51
  5. Step 5: Solve for x
    x = 1,525,749,474.51/54,288
  6. Step 6: Final answer
    x = 28,104.73

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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.