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Finding the Fourth Proportional to 72,078.94, 108,118.41 and 36,996.22

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Solution

The fourth proportional to 72,078.94, 108,118.41 and 36,996.22 is: 55,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,078.94 : 108,118.41 = 36,996.22 : x
  2. Step 2: Convert to fraction form
    72,078.94/108,118.41 = 36,996.22/x
  3. Step 3: Cross multiply
    72,078.94x = 108,118.41 × 36,996.22
  4. Step 4: Simplify right side
    72,078.94x = 3,999,972,482.41
  5. Step 5: Solve for x
    x = 3,999,972,482.41/72,078.94
  6. Step 6: Final answer
    x = 55,494.33

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Double scale
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Similar ratio
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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.