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Finding the Fourth Proportional to 87,676.47, 120,996.32 and 49,953.15

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Solution

The fourth proportional to 87,676.47, 120,996.32 and 49,953.15 is: 68,936.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,676.47 : 120,996.32 = 49,953.15 : x
  2. Step 2: Convert to fraction form
    87,676.47/120,996.32 = 49,953.15/x
  3. Step 3: Cross multiply
    87,676.47x = 120,996.32 × 49,953.15
  4. Step 4: Simplify right side
    87,676.47x = 6,044,147,072.64
  5. Step 5: Solve for x
    x = 6,044,147,072.64/87,676.47
  6. Step 6: Final answer
    x = 68,936.93

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1.5x scale

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.