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Finding the Fourth Proportional to 171,910.40, 257,865.60 and 59,717.30

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Solution

The fourth proportional to 171,910.40, 257,865.60 and 59,717.30 is: 89,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,910.40 : 257,865.60 = 59,717.30 : x
  2. Step 2: Convert to fraction form
    171,910.40/257,865.60 = 59,717.30/x
  3. Step 3: Cross multiply
    171,910.40x = 257,865.60 × 59,717.30
  4. Step 4: Simplify right side
    171,910.40x = 15,399,037,394.88
  5. Step 5: Solve for x
    x = 15,399,037,394.88/171,910.40
  6. Step 6: Final answer
    x = 89,575.95

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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.