Home / 87,958.17-131,935.43-21,398.65

Finding the Fourth Proportional to 87,958.17, 131,935.43 and 21,398.65

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Solution

The fourth proportional to 87,958.17, 131,935.43 and 21,398.65 is: 32,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,958.17 : 131,935.43 = 21,398.65 : x
  2. Step 2: Convert to fraction form
    87,958.17/131,935.43 = 21,398.65/x
  3. Step 3: Cross multiply
    87,958.17x = 131,935.43 × 21,398.65
  4. Step 4: Simplify right side
    87,958.17x = 2,823,239,812.83
  5. Step 5: Solve for x
    x = 2,823,239,812.83/87,958.17
  6. Step 6: Final answer
    x = 32,097.53

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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.