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Finding the Fourth Proportional to 63,434, 87,654.39 and 60,359.44

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Solution

The fourth proportional to 63,434, 87,654.39 and 60,359.44 is: 83,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,434 : 87,654.39 = 60,359.44 : x
  2. Step 2: Convert to fraction form
    63,434/87,654.39 = 60,359.44/x
  3. Step 3: Cross multiply
    63,434x = 87,654.39 × 60,359.44
  4. Step 4: Simplify right side
    63,434x = 5,290,769,893.94
  5. Step 5: Solve for x
    x = 5,290,769,893.94/63,434
  6. Step 6: Final answer
    x = 83,405.90

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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.