Home / 87,686.62-120,842.18-63,446.54

Finding the Fourth Proportional to 87,686.62, 120,842.18 and 63,446.54

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Solution

The fourth proportional to 87,686.62, 120,842.18 and 63,446.54 is: 87,436.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.62 : 120,842.18 = 63,446.54 : x
  2. Step 2: Convert to fraction form
    87,686.62/120,842.18 = 63,446.54/x
  3. Step 3: Cross multiply
    87,686.62x = 120,842.18 × 63,446.54
  4. Step 4: Simplify right side
    87,686.62x = 7,667,018,207.06
  5. Step 5: Solve for x
    x = 7,667,018,207.06/87,686.62
  6. Step 6: Final answer
    x = 87,436.58

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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.