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Finding the Fourth Proportional to 71,883.64, 99,200.09 and 39,619.44

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Solution

The fourth proportional to 71,883.64, 99,200.09 and 39,619.44 is: 54,675.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,883.64 : 99,200.09 = 39,619.44 : x
  2. Step 2: Convert to fraction form
    71,883.64/99,200.09 = 39,619.44/x
  3. Step 3: Cross multiply
    71,883.64x = 99,200.09 × 39,619.44
  4. Step 4: Simplify right side
    71,883.64x = 3,930,252,013.75
  5. Step 5: Solve for x
    x = 3,930,252,013.75/71,883.64
  6. Step 6: Final answer
    x = 54,675.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.