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Finding the Fourth Proportional to 72,079.20, 108,118.78 and 36,996.48

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Solution

The fourth proportional to 72,079.20, 108,118.78 and 36,996.48 is: 55,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,079.20 : 108,118.78 = 36,996.48 : x
  2. Step 2: Convert to fraction form
    72,079.20/108,118.78 = 36,996.48/x
  3. Step 3: Cross multiply
    72,079.20x = 108,118.78 × 36,996.48
  4. Step 4: Simplify right side
    72,079.20x = 4,000,014,281.89
  5. Step 5: Solve for x
    x = 4,000,014,281.89/72,079.20
  6. Step 6: Final answer
    x = 55,494.71

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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.