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Finding the Fourth Proportional to 40,383.50, 60,575.80 and 12,681.50

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Solution

The fourth proportional to 40,383.50, 60,575.80 and 12,681.50 is: 19,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,383.50 : 60,575.80 = 12,681.50 : x
  2. Step 2: Convert to fraction form
    40,383.50/60,575.80 = 12,681.50/x
  3. Step 3: Cross multiply
    40,383.50x = 60,575.80 × 12,681.50
  4. Step 4: Simplify right side
    40,383.50x = 768,192,007.70
  5. Step 5: Solve for x
    x = 768,192,007.70/40,383.50
  6. Step 6: Final answer
    x = 19,022.42

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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.