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Finding the Fourth Proportional to 84,992.44, 117,219.80 and 75,439.30

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Solution

The fourth proportional to 84,992.44, 117,219.80 and 75,439.30 is: 104,044.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,992.44 : 117,219.80 = 75,439.30 : x
  2. Step 2: Convert to fraction form
    84,992.44/117,219.80 = 75,439.30/x
  3. Step 3: Cross multiply
    84,992.44x = 117,219.80 × 75,439.30
  4. Step 4: Simplify right side
    84,992.44x = 8,842,979,658.14
  5. Step 5: Solve for x
    x = 8,842,979,658.14/84,992.44
  6. Step 6: Final answer
    x = 104,044.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.