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Finding the Fourth Proportional to 63,090.80, 94,616.72 and 20,961.92

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Solution

The fourth proportional to 63,090.80, 94,616.72 and 20,961.92 is: 31,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,090.80 : 94,616.72 = 20,961.92 : x
  2. Step 2: Convert to fraction form
    63,090.80/94,616.72 = 20,961.92/x
  3. Step 3: Cross multiply
    63,090.80x = 94,616.72 × 20,961.92
  4. Step 4: Simplify right side
    63,090.80x = 1,983,348,115.30
  5. Step 5: Solve for x
    x = 1,983,348,115.30/63,090.80
  6. Step 6: Final answer
    x = 31,436.41

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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.