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Finding the Fourth Proportional to 71,659.60, 107,489.66 and 21,740.12

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Solution

The fourth proportional to 71,659.60, 107,489.66 and 21,740.12 is: 32,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,659.60 : 107,489.66 = 21,740.12 : x
  2. Step 2: Convert to fraction form
    71,659.60/107,489.66 = 21,740.12/x
  3. Step 3: Cross multiply
    71,659.60x = 107,489.66 × 21,740.12
  4. Step 4: Simplify right side
    71,659.60x = 2,336,838,107.16
  5. Step 5: Solve for x
    x = 2,336,838,107.16/71,659.60
  6. Step 6: Final answer
    x = 32,610.26

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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.