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Finding the Fourth Proportional to 56,786.80, 85,115.60 and 34,551.16

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Solution

The fourth proportional to 56,786.80, 85,115.60 and 34,551.16 is: 51,787.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,786.80 : 85,115.60 = 34,551.16 : x
  2. Step 2: Convert to fraction form
    56,786.80/85,115.60 = 34,551.16/x
  3. Step 3: Cross multiply
    56,786.80x = 85,115.60 × 34,551.16
  4. Step 4: Simplify right side
    56,786.80x = 2,940,842,714.10
  5. Step 5: Solve for x
    x = 2,940,842,714.10/56,786.80
  6. Step 6: Final answer
    x = 51,787.44

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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.