Home / 87,187.31-130,780.25-57,736.92

Finding the Fourth Proportional to 87,187.31, 130,780.25 and 57,736.92

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Solution

The fourth proportional to 87,187.31, 130,780.25 and 57,736.92 is: 86,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,187.31 : 130,780.25 = 57,736.92 : x
  2. Step 2: Convert to fraction form
    87,187.31/130,780.25 = 57,736.92/x
  3. Step 3: Cross multiply
    87,187.31x = 130,780.25 × 57,736.92
  4. Step 4: Simplify right side
    87,187.31x = 7,550,848,831.83
  5. Step 5: Solve for x
    x = 7,550,848,831.83/87,187.31
  6. Step 6: Final answer
    x = 86,604.91

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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.