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Finding the Fourth Proportional to 56,067.80, 84,098.64 and 21,004.88

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Solution

The fourth proportional to 56,067.80, 84,098.64 and 21,004.88 is: 31,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,067.80 : 84,098.64 = 21,004.88 : x
  2. Step 2: Convert to fraction form
    56,067.80/84,098.64 = 21,004.88/x
  3. Step 3: Cross multiply
    56,067.80x = 84,098.64 × 21,004.88
  4. Step 4: Simplify right side
    56,067.80x = 1,766,481,841.36
  5. Step 5: Solve for x
    x = 1,766,481,841.36/56,067.80
  6. Step 6: Final answer
    x = 31,506.17

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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.