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Finding the Fourth Proportional to 54,049.48, 81,070.22 and 18,989.48

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Solution

The fourth proportional to 54,049.48, 81,070.22 and 18,989.48 is: 28,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,049.48 : 81,070.22 = 18,989.48 : x
  2. Step 2: Convert to fraction form
    54,049.48/81,070.22 = 18,989.48/x
  3. Step 3: Cross multiply
    54,049.48x = 81,070.22 × 18,989.48
  4. Step 4: Simplify right side
    54,049.48x = 1,539,481,321.29
  5. Step 5: Solve for x
    x = 1,539,481,321.29/54,049.48
  6. Step 6: Final answer
    x = 28,482.81

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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.