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Finding the Fourth Proportional to 79,261.50, 109,380.87 and 45,727.50

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Solution

The fourth proportional to 79,261.50, 109,380.87 and 45,727.50 is: 63,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,261.50 : 109,380.87 = 45,727.50 : x
  2. Step 2: Convert to fraction form
    79,261.50/109,380.87 = 45,727.50/x
  3. Step 3: Cross multiply
    79,261.50x = 109,380.87 × 45,727.50
  4. Step 4: Simplify right side
    79,261.50x = 5,001,713,732.93
  5. Step 5: Solve for x
    x = 5,001,713,732.93/79,261.50
  6. Step 6: Final answer
    x = 63,103.95

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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.