Home / 54,130.07-81,186.91-20,865.80

Finding the Fourth Proportional to 54,130.07, 81,186.91 and 20,865.80

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Solution

The fourth proportional to 54,130.07, 81,186.91 and 20,865.80 is: 31,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,130.07 : 81,186.91 = 20,865.80 : x
  2. Step 2: Convert to fraction form
    54,130.07/81,186.91 = 20,865.80/x
  3. Step 3: Cross multiply
    54,130.07x = 81,186.91 × 20,865.80
  4. Step 4: Simplify right side
    54,130.07x = 1,694,029,977.48
  5. Step 5: Solve for x
    x = 1,694,029,977.48/54,130.07
  6. Step 6: Final answer
    x = 31,295.54

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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.