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Finding the Fourth Proportional to 54,478.92, 81,676.84 and 28,166.88

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Solution

The fourth proportional to 54,478.92, 81,676.84 and 28,166.88 is: 42,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,478.92 : 81,676.84 = 28,166.88 : x
  2. Step 2: Convert to fraction form
    54,478.92/81,676.84 = 28,166.88/x
  3. Step 3: Cross multiply
    54,478.92x = 81,676.84 × 28,166.88
  4. Step 4: Simplify right side
    54,478.92x = 2,300,581,751.06
  5. Step 5: Solve for x
    x = 2,300,581,751.06/54,478.92
  6. Step 6: Final answer
    x = 42,228.84

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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.