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Finding the Fourth Proportional to 56,651.54, 84,985.68 and 21,103.88

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Solution

The fourth proportional to 56,651.54, 84,985.68 and 21,103.88 is: 31,658.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,651.54 : 84,985.68 = 21,103.88 : x
  2. Step 2: Convert to fraction form
    56,651.54/84,985.68 = 21,103.88/x
  3. Step 3: Cross multiply
    56,651.54x = 84,985.68 × 21,103.88
  4. Step 4: Simplify right side
    56,651.54x = 1,793,527,592.44
  5. Step 5: Solve for x
    x = 1,793,527,592.44/56,651.54
  6. Step 6: Final answer
    x = 31,658.94

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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.