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Finding the Fourth Proportional to 72,086.40, 108,145.80 and 22,168.80

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Solution

The fourth proportional to 72,086.40, 108,145.80 and 22,168.80 is: 33,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,086.40 : 108,145.80 = 22,168.80 : x
  2. Step 2: Convert to fraction form
    72,086.40/108,145.80 = 22,168.80/x
  3. Step 3: Cross multiply
    72,086.40x = 108,145.80 × 22,168.80
  4. Step 4: Simplify right side
    72,086.40x = 2,397,462,611.04
  5. Step 5: Solve for x
    x = 2,397,462,611.04/72,086.40
  6. Step 6: Final answer
    x = 33,258.18

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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.