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Finding the Fourth Proportional to 69,003.68, 103,505.52 and 55,087.52

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Solution

The fourth proportional to 69,003.68, 103,505.52 and 55,087.52 is: 82,631.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,003.68 : 103,505.52 = 55,087.52 : x
  2. Step 2: Convert to fraction form
    69,003.68/103,505.52 = 55,087.52/x
  3. Step 3: Cross multiply
    69,003.68x = 103,505.52 × 55,087.52
  4. Step 4: Simplify right side
    69,003.68x = 5,701,862,403.11
  5. Step 5: Solve for x
    x = 5,701,862,403.11/69,003.68
  6. Step 6: Final answer
    x = 82,631.28

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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.