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Finding the Fourth Proportional to 90,043.92, 135,065.88 and 27,714.96

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Solution

The fourth proportional to 90,043.92, 135,065.88 and 27,714.96 is: 41,572.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,043.92 : 135,065.88 = 27,714.96 : x
  2. Step 2: Convert to fraction form
    90,043.92/135,065.88 = 27,714.96/x
  3. Step 3: Cross multiply
    90,043.92x = 135,065.88 × 27,714.96
  4. Step 4: Simplify right side
    90,043.92x = 3,743,345,461.56
  5. Step 5: Solve for x
    x = 3,743,345,461.56/90,043.92
  6. Step 6: Final answer
    x = 41,572.44

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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.