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Finding the Fourth Proportional to 80,484.94, 120,729.95 and 38,369.62

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Solution

The fourth proportional to 80,484.94, 120,729.95 and 38,369.62 is: 57,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,484.94 : 120,729.95 = 38,369.62 : x
  2. Step 2: Convert to fraction form
    80,484.94/120,729.95 = 38,369.62/x
  3. Step 3: Cross multiply
    80,484.94x = 120,729.95 × 38,369.62
  4. Step 4: Simplify right side
    80,484.94x = 4,632,361,508.62
  5. Step 5: Solve for x
    x = 4,632,361,508.62/80,484.94
  6. Step 6: Final answer
    x = 57,555.63

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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.