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Finding the Fourth Proportional to 71,183.58, 106,776.45 and 21,252.48

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Solution

The fourth proportional to 71,183.58, 106,776.45 and 21,252.48 is: 31,879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,183.58 : 106,776.45 = 21,252.48 : x
  2. Step 2: Convert to fraction form
    71,183.58/106,776.45 = 21,252.48/x
  3. Step 3: Cross multiply
    71,183.58x = 106,776.45 × 21,252.48
  4. Step 4: Simplify right side
    71,183.58x = 2,269,264,368.10
  5. Step 5: Solve for x
    x = 2,269,264,368.10/71,183.58
  6. Step 6: Final answer
    x = 31,879.04

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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.