Home / 87,128.91-130,710.38-27,960.03

Finding the Fourth Proportional to 87,128.91, 130,710.38 and 27,960.03

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Solution

The fourth proportional to 87,128.91, 130,710.38 and 27,960.03 is: 41,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.91 : 130,710.38 = 27,960.03 : x
  2. Step 2: Convert to fraction form
    87,128.91/130,710.38 = 27,960.03/x
  3. Step 3: Cross multiply
    87,128.91x = 130,710.38 × 27,960.03
  4. Step 4: Simplify right side
    87,128.91x = 3,654,666,216.01
  5. Step 5: Solve for x
    x = 3,654,666,216.01/87,128.91
  6. Step 6: Final answer
    x = 41,945.51

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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.