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Finding the Fourth Proportional to 79,732.80, 119,596.20 and 19,761.45

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Solution

The fourth proportional to 79,732.80, 119,596.20 and 19,761.45 is: 29,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,732.80 : 119,596.20 = 19,761.45 : x
  2. Step 2: Convert to fraction form
    79,732.80/119,596.20 = 19,761.45/x
  3. Step 3: Cross multiply
    79,732.80x = 119,596.20 × 19,761.45
  4. Step 4: Simplify right side
    79,732.80x = 2,363,394,326.49
  5. Step 5: Solve for x
    x = 2,363,394,326.49/79,732.80
  6. Step 6: Final answer
    x = 29,641.43

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1.5x scale

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.