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Finding the Fourth Proportional to 69,885.81, 96,450.50 and 39,668.31

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Solution

The fourth proportional to 69,885.81, 96,450.50 and 39,668.31 is: 54,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,885.81 : 96,450.50 = 39,668.31 : x
  2. Step 2: Convert to fraction form
    69,885.81/96,450.50 = 39,668.31/x
  3. Step 3: Cross multiply
    69,885.81x = 96,450.50 × 39,668.31
  4. Step 4: Simplify right side
    69,885.81x = 3,826,027,938.42
  5. Step 5: Solve for x
    x = 3,826,027,938.42/69,885.81
  6. Step 6: Final answer
    x = 54,746.85

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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.