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Finding the Fourth Proportional to 72,244.40, 108,334.20 and 32,781.20

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Solution

The fourth proportional to 72,244.40, 108,334.20 and 32,781.20 is: 49,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,244.40 : 108,334.20 = 32,781.20 : x
  2. Step 2: Convert to fraction form
    72,244.40/108,334.20 = 32,781.20/x
  3. Step 3: Cross multiply
    72,244.40x = 108,334.20 × 32,781.20
  4. Step 4: Simplify right side
    72,244.40x = 3,551,325,077.04
  5. Step 5: Solve for x
    x = 3,551,325,077.04/72,244.40
  6. Step 6: Final answer
    x = 49,157.10

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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.