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Finding the Fourth Proportional to 71,789.03, 99,064.87 and 39,522.33

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Solution

The fourth proportional to 71,789.03, 99,064.87 and 39,522.33 is: 54,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,789.03 : 99,064.87 = 39,522.33 : x
  2. Step 2: Convert to fraction form
    71,789.03/99,064.87 = 39,522.33/x
  3. Step 3: Cross multiply
    71,789.03x = 99,064.87 × 39,522.33
  4. Step 4: Simplify right side
    71,789.03x = 3,915,274,607.05
  5. Step 5: Solve for x
    x = 3,915,274,607.05/71,789.03
  6. Step 6: Final answer
    x = 54,538.62

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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.