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Finding the Fourth Proportional to 79,809.38, 119,714.07 and 27,219.32

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Solution

The fourth proportional to 79,809.38, 119,714.07 and 27,219.32 is: 40,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,809.38 : 119,714.07 = 27,219.32 : x
  2. Step 2: Convert to fraction form
    79,809.38/119,714.07 = 27,219.32/x
  3. Step 3: Cross multiply
    79,809.38x = 119,714.07 × 27,219.32
  4. Step 4: Simplify right side
    79,809.38x = 3,258,535,579.83
  5. Step 5: Solve for x
    x = 3,258,535,579.83/79,809.38
  6. Step 6: Final answer
    x = 40,828.98

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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.