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Finding the Fourth Proportional to 71,958.33, 99,302.90 and 39,694.08

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Solution

The fourth proportional to 71,958.33, 99,302.90 and 39,694.08 is: 54,778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,958.33 : 99,302.90 = 39,694.08 : x
  2. Step 2: Convert to fraction form
    71,958.33/99,302.90 = 39,694.08/x
  3. Step 3: Cross multiply
    71,958.33x = 99,302.90 × 39,694.08
  4. Step 4: Simplify right side
    71,958.33x = 3,941,737,430.75
  5. Step 5: Solve for x
    x = 3,941,737,430.75/71,958.33
  6. Step 6: Final answer
    x = 54,778.06

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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.