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Finding the Fourth Proportional to 69,268.72, 103,903.08 and 55,505.20

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Solution

The fourth proportional to 69,268.72, 103,903.08 and 55,505.20 is: 83,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,268.72 : 103,903.08 = 55,505.20 : x
  2. Step 2: Convert to fraction form
    69,268.72/103,903.08 = 55,505.20/x
  3. Step 3: Cross multiply
    69,268.72x = 103,903.08 × 55,505.20
  4. Step 4: Simplify right side
    69,268.72x = 5,767,161,236.02
  5. Step 5: Solve for x
    x = 5,767,161,236.02/69,268.72
  6. Step 6: Final answer
    x = 83,257.80

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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.