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Finding the Fourth Proportional to 72,005.87, 108,009.44 and 22,086.20

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Solution

The fourth proportional to 72,005.87, 108,009.44 and 22,086.20 is: 33,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,005.87 : 108,009.44 = 22,086.20 : x
  2. Step 2: Convert to fraction form
    72,005.87/108,009.44 = 22,086.20/x
  3. Step 3: Cross multiply
    72,005.87x = 108,009.44 × 22,086.20
  4. Step 4: Simplify right side
    72,005.87x = 2,385,517,443.25
  5. Step 5: Solve for x
    x = 2,385,517,443.25/72,005.87
  6. Step 6: Final answer
    x = 33,129.49

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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.