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Finding the Fourth Proportional to 75,107.61, 103,653.49 and 43,278.55

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Solution

The fourth proportional to 75,107.61, 103,653.49 and 43,278.55 is: 59,727.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,107.61 : 103,653.49 = 43,278.55 : x
  2. Step 2: Convert to fraction form
    75,107.61/103,653.49 = 43,278.55/x
  3. Step 3: Cross multiply
    75,107.61x = 103,653.49 × 43,278.55
  4. Step 4: Simplify right side
    75,107.61x = 4,485,972,749.64
  5. Step 5: Solve for x
    x = 4,485,972,749.64/75,107.61
  6. Step 6: Final answer
    x = 59,727.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.