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Finding the Fourth Proportional to 73,268.80, 109,903.20 and 43,744.30

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Solution

The fourth proportional to 73,268.80, 109,903.20 and 43,744.30 is: 65,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,268.80 : 109,903.20 = 43,744.30 : x
  2. Step 2: Convert to fraction form
    73,268.80/109,903.20 = 43,744.30/x
  3. Step 3: Cross multiply
    73,268.80x = 109,903.20 × 43,744.30
  4. Step 4: Simplify right side
    73,268.80x = 4,807,638,551.76
  5. Step 5: Solve for x
    x = 4,807,638,551.76/73,268.80
  6. Step 6: Final answer
    x = 65,616.45

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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.