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Finding the Fourth Proportional to 87,486.82, 120,751.56 and 53,523.62

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Solution

The fourth proportional to 87,486.82, 120,751.56 and 53,523.62 is: 73,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,486.82 : 120,751.56 = 53,523.62 : x
  2. Step 2: Convert to fraction form
    87,486.82/120,751.56 = 53,523.62/x
  3. Step 3: Cross multiply
    87,486.82x = 120,751.56 × 53,523.62
  4. Step 4: Simplify right side
    87,486.82x = 6,463,060,460.91
  5. Step 5: Solve for x
    x = 6,463,060,460.91/87,486.82
  6. Step 6: Final answer
    x = 73,874.68

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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.