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Finding the Fourth Proportional to 71,909.21, 107,840.33 and 23,864.91

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Solution

The fourth proportional to 71,909.21, 107,840.33 and 23,864.91 is: 35,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,909.21 : 107,840.33 = 23,864.91 : x
  2. Step 2: Convert to fraction form
    71,909.21/107,840.33 = 23,864.91/x
  3. Step 3: Cross multiply
    71,909.21x = 107,840.33 × 23,864.91
  4. Step 4: Simplify right side
    71,909.21x = 2,573,599,230.62
  5. Step 5: Solve for x
    x = 2,573,599,230.62/71,909.21
  6. Step 6: Final answer
    x = 35,789.57

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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.