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Finding the Fourth Proportional to 79,034.52, 109,174.14 and 63,231.96

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Solution

The fourth proportional to 79,034.52, 109,174.14 and 63,231.96 is: 87,345.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,034.52 : 109,174.14 = 63,231.96 : x
  2. Step 2: Convert to fraction form
    79,034.52/109,174.14 = 63,231.96/x
  3. Step 3: Cross multiply
    79,034.52x = 109,174.14 × 63,231.96
  4. Step 4: Simplify right side
    79,034.52x = 6,903,294,853.51
  5. Step 5: Solve for x
    x = 6,903,294,853.51/79,034.52
  6. Step 6: Final answer
    x = 87,345.31

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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.