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Finding the Fourth Proportional to 71,166.12, 106,745.54 and 21,246.63

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Solution

The fourth proportional to 71,166.12, 106,745.54 and 21,246.63 is: 31,868.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,166.12 : 106,745.54 = 21,246.63 : x
  2. Step 2: Convert to fraction form
    71,166.12/106,745.54 = 21,246.63/x
  3. Step 3: Cross multiply
    71,166.12x = 106,745.54 × 21,246.63
  4. Step 4: Simplify right side
    71,166.12x = 2,267,982,886.30
  5. Step 5: Solve for x
    x = 2,267,982,886.30/71,166.12
  6. Step 6: Final answer
    x = 31,868.86

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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.