Home / 87,128.06-130,621.74-33,792.51

Finding the Fourth Proportional to 87,128.06, 130,621.74 and 33,792.51

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Solution

The fourth proportional to 87,128.06, 130,621.74 and 33,792.51 is: 50,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,128.06 : 130,621.74 = 33,792.51 : x
  2. Step 2: Convert to fraction form
    87,128.06/130,621.74 = 33,792.51/x
  3. Step 3: Cross multiply
    87,128.06x = 130,621.74 × 33,792.51
  4. Step 4: Simplify right side
    87,128.06x = 4,414,036,347.18
  5. Step 5: Solve for x
    x = 4,414,036,347.18/87,128.06
  6. Step 6: Final answer
    x = 50,661.48

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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.