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Finding the Fourth Proportional to 55,135.71, 82,730.88 and 21,855.03

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Solution

The fourth proportional to 55,135.71, 82,730.88 and 21,855.03 is: 32,793.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,135.71 : 82,730.88 = 21,855.03 : x
  2. Step 2: Convert to fraction form
    55,135.71/82,730.88 = 21,855.03/x
  3. Step 3: Cross multiply
    55,135.71x = 82,730.88 × 21,855.03
  4. Step 4: Simplify right side
    55,135.71x = 1,808,085,864.33
  5. Step 5: Solve for x
    x = 1,808,085,864.33/55,135.71
  6. Step 6: Final answer
    x = 32,793.37

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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.