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Finding the Fourth Proportional to 87,581.94, 119,987.70 and 84,301.92

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Solution

The fourth proportional to 87,581.94, 119,987.70 and 84,301.92 is: 115,494.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,581.94 : 119,987.70 = 84,301.92 : x
  2. Step 2: Convert to fraction form
    87,581.94/119,987.70 = 84,301.92/x
  3. Step 3: Cross multiply
    87,581.94x = 119,987.70 × 84,301.92
  4. Step 4: Simplify right side
    87,581.94x = 10,115,193,486.38
  5. Step 5: Solve for x
    x = 10,115,193,486.38/87,581.94
  6. Step 6: Final answer
    x = 115,494.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.