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Finding the Fourth Proportional to 51,616.80, 71,230.80 and 29,261.60

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Solution

The fourth proportional to 51,616.80, 71,230.80 and 29,261.60 is: 40,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,616.80 : 71,230.80 = 29,261.60 : x
  2. Step 2: Convert to fraction form
    51,616.80/71,230.80 = 29,261.60/x
  3. Step 3: Cross multiply
    51,616.80x = 71,230.80 × 29,261.60
  4. Step 4: Simplify right side
    51,616.80x = 2,084,327,177.28
  5. Step 5: Solve for x
    x = 2,084,327,177.28/51,616.80
  6. Step 6: Final answer
    x = 40,380.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.