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Finding the Fourth Proportional to 71,257.35, 106,886.97 and 21,325.98

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Solution

The fourth proportional to 71,257.35, 106,886.97 and 21,325.98 is: 31,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,257.35 : 106,886.97 = 21,325.98 : x
  2. Step 2: Convert to fraction form
    71,257.35/106,886.97 = 21,325.98/x
  3. Step 3: Cross multiply
    71,257.35x = 106,886.97 × 21,325.98
  4. Step 4: Simplify right side
    71,257.35x = 2,279,469,384.48
  5. Step 5: Solve for x
    x = 2,279,469,384.48/71,257.35
  6. Step 6: Final answer
    x = 31,989.25

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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.