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Finding the Fourth Proportional to 71,659.10, 107,488.91 and 21,739.62

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Solution

The fourth proportional to 71,659.10, 107,488.91 and 21,739.62 is: 32,609.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,659.10 : 107,488.91 = 21,739.62 : x
  2. Step 2: Convert to fraction form
    71,659.10/107,488.91 = 21,739.62/x
  3. Step 3: Cross multiply
    71,659.10x = 107,488.91 × 21,739.62
  4. Step 4: Simplify right side
    71,659.10x = 2,336,768,057.61
  5. Step 5: Solve for x
    x = 2,336,768,057.61/71,659.10
  6. Step 6: Final answer
    x = 32,609.51

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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.