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Finding the Fourth Proportional to 54,934.55, 82,405.04 and 21,200.74

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Solution

The fourth proportional to 54,934.55, 82,405.04 and 21,200.74 is: 31,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,934.55 : 82,405.04 = 21,200.74 : x
  2. Step 2: Convert to fraction form
    54,934.55/82,405.04 = 21,200.74/x
  3. Step 3: Cross multiply
    54,934.55x = 82,405.04 × 21,200.74
  4. Step 4: Simplify right side
    54,934.55x = 1,747,048,098.50
  5. Step 5: Solve for x
    x = 1,747,048,098.50/54,934.55
  6. Step 6: Final answer
    x = 31,802.36

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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.