Home / 87,139.24-130,714.79-27,971.33

Finding the Fourth Proportional to 87,139.24, 130,714.79 and 27,971.33

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Solution

The fourth proportional to 87,139.24, 130,714.79 and 27,971.33 is: 41,958.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,139.24 : 130,714.79 = 27,971.33 : x
  2. Step 2: Convert to fraction form
    87,139.24/130,714.79 = 27,971.33/x
  3. Step 3: Cross multiply
    87,139.24x = 130,714.79 × 27,971.33
  4. Step 4: Simplify right side
    87,139.24x = 3,656,265,812.21
  5. Step 5: Solve for x
    x = 3,656,265,812.21/87,139.24
  6. Step 6: Final answer
    x = 41,958.89

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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.