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Finding the Fourth Proportional to 57,702.64, 86,550.72 and 20,264.44

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Solution

The fourth proportional to 57,702.64, 86,550.72 and 20,264.44 is: 30,395.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,702.64 : 86,550.72 = 20,264.44 : x
  2. Step 2: Convert to fraction form
    57,702.64/86,550.72 = 20,264.44/x
  3. Step 3: Cross multiply
    57,702.64x = 86,550.72 × 20,264.44
  4. Step 4: Simplify right side
    57,702.64x = 1,753,901,872.40
  5. Step 5: Solve for x
    x = 1,753,901,872.40/57,702.64
  6. Step 6: Final answer
    x = 30,395.52

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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.