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Finding the Fourth Proportional to 69,890.70, 96,450.32 and 39,676.92

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Solution

The fourth proportional to 69,890.70, 96,450.32 and 39,676.92 is: 54,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,890.70 : 96,450.32 = 39,676.92 : x
  2. Step 2: Convert to fraction form
    69,890.70/96,450.32 = 39,676.92/x
  3. Step 3: Cross multiply
    69,890.70x = 96,450.32 × 39,676.92
  4. Step 4: Simplify right side
    69,890.70x = 3,826,851,630.61
  5. Step 5: Solve for x
    x = 3,826,851,630.61/69,890.70
  6. Step 6: Final answer
    x = 54,754.80

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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.