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Finding the Fourth Proportional to 71,808.78, 107,779.73 and 36,294.85

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Solution

The fourth proportional to 71,808.78, 107,779.73 and 36,294.85 is: 54,475.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,808.78 : 107,779.73 = 36,294.85 : x
  2. Step 2: Convert to fraction form
    71,808.78/107,779.73 = 36,294.85/x
  3. Step 3: Cross multiply
    71,808.78x = 107,779.73 × 36,294.85
  4. Step 4: Simplify right side
    71,808.78x = 3,911,848,784.55
  5. Step 5: Solve for x
    x = 3,911,848,784.55/71,808.78
  6. Step 6: Final answer
    x = 54,475.91

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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.