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Finding the Fourth Proportional to 47,998.56, 71,992.82 and 12,936.08

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Solution

The fourth proportional to 47,998.56, 71,992.82 and 12,936.08 is: 19,402.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,998.56 : 71,992.82 = 12,936.08 : x
  2. Step 2: Convert to fraction form
    47,998.56/71,992.82 = 12,936.08/x
  3. Step 3: Cross multiply
    47,998.56x = 71,992.82 × 12,936.08
  4. Step 4: Simplify right side
    47,998.56x = 931,304,878.95
  5. Step 5: Solve for x
    x = 931,304,878.95/47,998.56
  6. Step 6: Final answer
    x = 19,402.77

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1.5x scale

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.