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Finding the Fourth Proportional to 38,702.25, 58,004.81 and 20,932.20

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Solution

The fourth proportional to 38,702.25, 58,004.81 and 20,932.20 is: 31,372.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,702.25 : 58,004.81 = 20,932.20 : x
  2. Step 2: Convert to fraction form
    38,702.25/58,004.81 = 20,932.20/x
  3. Step 3: Cross multiply
    38,702.25x = 58,004.81 × 20,932.20
  4. Step 4: Simplify right side
    38,702.25x = 1,214,168,179.22
  5. Step 5: Solve for x
    x = 1,214,168,179.22/38,702.25
  6. Step 6: Final answer
    x = 31,372.03

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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.