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Finding the Fourth Proportional to 71,654.12, 107,481.42 and 21,734.64

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Solution

The fourth proportional to 71,654.12, 107,481.42 and 21,734.64 is: 32,602.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,654.12 : 107,481.42 = 21,734.64 : x
  2. Step 2: Convert to fraction form
    71,654.12/107,481.42 = 21,734.64/x
  3. Step 3: Cross multiply
    71,654.12x = 107,481.42 × 21,734.64
  4. Step 4: Simplify right side
    71,654.12x = 2,336,069,970.39
  5. Step 5: Solve for x
    x = 2,336,069,970.39/71,654.12
  6. Step 6: Final answer
    x = 32,602.04

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1.5x scale

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.