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Finding the Fourth Proportional to 54,041.76, 81,073.50 and 18,976.80

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Solution

The fourth proportional to 54,041.76, 81,073.50 and 18,976.80 is: 28,469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,041.76 : 81,073.50 = 18,976.80 : x
  2. Step 2: Convert to fraction form
    54,041.76/81,073.50 = 18,976.80/x
  3. Step 3: Cross multiply
    54,041.76x = 81,073.50 × 18,976.80
  4. Step 4: Simplify right side
    54,041.76x = 1,538,515,594.80
  5. Step 5: Solve for x
    x = 1,538,515,594.80/54,041.76
  6. Step 6: Final answer
    x = 28,469.01

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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.