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Finding the Fourth Proportional to 79,964.92, 119,695.88 and 54,858.16

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Solution

The fourth proportional to 79,964.92, 119,695.88 and 54,858.16 is: 82,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,964.92 : 119,695.88 = 54,858.16 : x
  2. Step 2: Convert to fraction form
    79,964.92/119,695.88 = 54,858.16/x
  3. Step 3: Cross multiply
    79,964.92x = 119,695.88 × 54,858.16
  4. Step 4: Simplify right side
    79,964.92x = 6,566,295,714.57
  5. Step 5: Solve for x
    x = 6,566,295,714.57/79,964.92
  6. Step 6: Final answer
    x = 82,114.70

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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.